1. THE ANABOLIC WINDOW AFTER TRAINING: If you DON'T consume protein within 30 minutes after training, you're hindering your muscle gains.

Any solid evidence to support this is lacking.
 
A recent study (1) looked at protein synthesis over a 24 hour period, and found it to be the same after 3 hours and again at the 24 hour mark. 
 
Also - new research (2) observes that ONE resistance training workout enhances insulin sensitivity in healthy men, for 24 hours!
 
So where's the need for protein IMMEDIATELY after training if insulin sensitivity is enhanced for that long?
 
Exactly.
 
 

2. HIGH GI CARBS TURN TO FAT - STICK TO THE WHOLEMEAL TYPE

It's all about OVERALL calories.
 
Yes, there are some added health benefits with the wholemeal type, but in this case it's beside the point. Eat more than your TDEE (total daily energy expenditure) and you'll PUT ON weight. Eat less, and you'll LOSE it. It doesn't matter WHAT carbs you eat.
 
Don't believe it? 
 
What about the professor in America, who performed his own experiment (3), by eating NOTHING BUT TWINKIES, whilst remaining in a calorie deficit?
 

The result? He lost 12 kilos!

 

3. LOW CARB DIETS ARE THE BEST FOR FAT LOSS

Blame it on the celebrities.
 
Low carb diets seem to be all the craze. One of the BEST ways to lose weight is to combine a High Intensity Interval Training (HIIT) program with a weight lifting program.
 

Getting the most out of your workouts is VITAL for optimal results. And what do you need to perform at your best? 

CARBOHYDRATES. 

Sure, your body can do without them, but why do that?

By sacrificing carbohydrates, your training intensity DECREASES (4).

Fact.

Fill your car up before going on a drive. 

REMEMBER: It's all about OVERALL CALORIES. Also, think about our professor Twinkie mentioned in the last myth. 

 

4. HIGH REPS BUILD DEFINITION

Possibly the greatest and longest surviving myth since the tooth fairy.
 

The only thing that builds definition is a CALORIE DEFICIT - less calories than your body burns every day.

The thought process behind this is that because you're performing MORE REPS - you're burning more calories.

Sure, you possibly will, but it all comes down to energy balance (which higher reps won't put a big enough dent into).

 
So focus on your diet for fat loss, not 15 reps as opposed to 8-10. 
 

5. LOW REPS ARE THE BEST FOR BUILDING MUSCLE

Another muscle rep myth. 
 

One study (6) looked at HIGH REPS v LOW REPS in the context of quadricep training, and observed a 7% growth in the quadriceps for BOTH groups, using MRI, which is a very accurate way to measure muscle growth.

Yes, low reps are superior for strength, but muscle hypertrophy (muscle growth) is still achieved with high reps!

READ MORE ABOUT THIS on FIT'N'FLEXED HERE

 

6. DON'T EAT CARBS BEFORE BED - THEY'LL MAKE YOU FAT

Well the science just doesn't back this up at all.
 
Chances are you're somebody who exercises regularly, which puts you on the path to a HIGHER sleeping metabolic rate - meaning you could well burn MORE fat whilst you sleep! (7).
 

At worst - the data we have today tells us there's no difference between your resting metabolic rate during the day, and your sleeping metabolic rate at night (8,9).

 

7. EATING SMALLER AND MORE FREQUENT MEALS IS THE BEST WAY TO INCREASE YOUR METABOLISM - YOU'LL LOSE MORE WEIGHT LIKE THIS

Aw please.

One study (10) blew this non-sense out of the water in 2009 - but people still harp on about it like it's weight loss gospel.
 
The study involved two groups of overweight women and men, and shadowed them for 8 weeks. They were randomly assigned low calorie diets. Both groups ate the identical amount of calories a day, but one group got theres in 6 meals - the other in 3.
 
The results? Both groups experienced THE SAME amount of weight loss! 
 

PLUS: There was zero difference in their appetite control, or in any of their hormones that promote hunger or the feeling of being full.

 

8. EATING EVERY 3 HOURS IS THE BEST WAY TO EAT FOR MUSCLE GROWTH

Another meal frequency bro science tip.
 

The length of protein synthesis after a meal packing protein, carbs and fat, is around THREE hours long (11) - with plasma leucine levels [the amino acid behind protein synthesis(12)] still elevated nearly three times above baseline. 

So why would you bother eating every 3 hours, when the levels of the main amino acid behind muscle growth in your blood, still elevated?

Exactly. You wouldn't! 

READ MORE ABOUT THIS and THE BEST WAY TO EAT MORE MUSCLE GROWTH on FIT'N'FLEXED HERE.

 

9. SATURATED FATS ARE BAD FOR YOUR HEALTH

And Kanye West is polite.
 

Recent research (13) has found "there is no significant evidence for concluding that dietary saturated fat is associated with an increased risk of coronary heart disease or cardiovascular disease.

 

10. RAW FOOD IS BETTER - ALL THE CELEBRITIES DO IT.

Let's look at eggs for example.

Research (14) tells us that only 50% of raw egg protein is absorbed. The same study also found that protein from cooked eggs is absorbed in a superior manner - at a rate of 91%. 

Let's move onto one of the BEST vegetables out there: Broccoli.

One study (15) found that steamed broccoli is superior to RAW broccoli, with the steaming spurring on an increased level of cancer fighting compounds called glucosinolates! 

READ MORE ABOUT RAW FOOD DIETS on FIT'N'FLEXED HERE.

 

11. DOING CARDIO ON AN EMPTY STOMACH IS BEST FOR FAT LOSS

Another popular myth that won't do you any good! 

The theory here is that your body will have limited glycogen availability first thing in the morning, so it will be forced to turn to your fat stores for energy (in a process called lipolysis).

Sounds right - but there's no science to back it up! 

Training in a fasted state DOUBLES your nitrogen losses (16), meaning you're burning up your hard earnt muscle mass. 

Given how muscle mass keeps fat at bay, and promotes optimal body composition, you can see why it's not the brightest idea. 

Another problem?

Food intake prior to cardio INCREASES the thermic effect of exercise (17). This means that a meal before hand will increase the fat-loss results from your workout.

Also, you can train harder after the intake of nutrients compared to none at all. 

And yes,this EVEN goes for carbohydrates!

Many think that ingesting carbohydrates BEFORE cardio will leave you burning JUST the carbs, and zero fat.

But this just isn't true - as carbohydrates before or during training have been found to NOT impair fat loss (18).

 

12. YOU HAVE TO LOAD CREATINE FOR BEST RESULTS

Loading creatine was once seen as a MUST, but research tells us otherwise!
 
Data (19) tells us that just 5g of creatine per day for 10 weeks, leads to greater gains in strength, power, and body mass, with nochange in body fat percentage. This study was done on American college football players.
 

13. CARBS IN YOUR POST WORKOUT SHAKE IS IMPORTANT FOR OPTIMAL MUSCLE GROWTH

It sounds like the perfect theory.  

Carbohydrates in your post-workout shake, will signal an insulin release that will drive the amino acids into your myocytes (muscle cells).

BUT - this just isn't the case!

Research (20) examined nine men after training, to see if carbohydrates paired with protein compared to just protein alone further induced muscle protein synthesis.

And what did they find? 

The carbohydrate was found to NOT be "additive" to the rates of muscle protein synthesis, or muscle protein breakdown.

Futhermore, others claim that a carbohydrate supplement in their post-workout shake can be used for glycogen replenishment - but the truth to this is non existent. 

Research has shown carbohydrates after strength training increased muscle glycogen by a measly 16% more, as opposed to....wait for it.....a glass of water! (21). 

Glycogen can very easily be replenished with a carbohydrate meal at a convenient time after training - there's no need to rush into a rapidly absorbing carbohydrate supplement - unless you are an endurace athlete. 

Our next workout is most likely 24 hours away, meaning there's ample opportunity to top up our glycogen stores. 

 

14. NOT EATING FOR SEVERAL HOURS FORCES YOUR BODY INTO STARVATION MODE - MEANING YOU'LL STORE YOUR NEXT BATCH OF FOOD AS FAT!

Not a chance! 

Fasting actually INCREASES your metabolic rate.

One study reported a 3.6% INCREASE in resting metabolic rate after fasting for 48 hours (22).

Think of the caveman - there was never a fat one! They were going DAYS without food. 

 

15. DON'T EAT MORE THAN 30g OF PROTEIN IN ONE SITTING - YOUR BODY CAN'T ABSORB ANYMORE THAN THAT!

Believe it or not - people still harp on about this one like its gospel.

But it just isn't true.

Data shows that the body can handle much more than this - with subjects easily consuming an average of 80-100g of protein in 4 hours (23).

Also, there's no maximum known amount of protein that can be absorbed in one sitting.

Spread the truth about these myths! 

 

FURTHER READING: THE WORLD'S BIGGEST MUSCLE GROWTH MYTH

 

Stay Fit, Stay Flexed!

 

REFERENCES

(1) Tipton KD, Borsheim E, Wolf SE, Sanford AP, Wolfe RR. Acute response of net muscle protein balance reflects 24-h balance after exercise and amino acid ingestion. Am J Physiol Endocrinol Metab. 2003 Jan;284(1):E76-89. Epub 2002 Sep 11.

(2) Koopman R, Manders RJ, Zorenc AH, Hul GB, Kuipers H, Keizer HA, Van Loon LJ. A single session of resistance exercise enhances insulin sensitivity for at least 24 hours in healthy men. Eur J Appl Physiol. 2005 May;94(1-2):180-7. Epub 2005 Mar 11.

(3) Park M. "Twinkie diet helps nutrition professor lose 27 pounds." CNN News. 2010 Nov 8.

(4) Miller SL, Wolfe RR. Physical exercise as a modulator of adaptation to low and high carbohydrate and low and high fat intakes. Eur J Clin Nutr. 1999 Apr;53 Suppl 1:S112-9.

(5) Fatouros IG et al. Intensity of resistance exercise determines adipokine and resting energy expenditure responses in overweight elderly individuals. Diabetes Care. 2009 Dec;32(12):2161-7. doi: 10.2337/dc08-1994. Epub 2009 Sep 3.

(6) Nicholas A. Burd, Cameron J. Mitchell, Tyler A. Churchward-Venne, Stuart M. Phillips. "Bigger weights may not beget bigger muscles: evidence from acute muscle protein synthetic responses after resistance exercise." Applied Physiology, Nutrition, and Metabolism, 2012.

(7) Mischler I, Vermorel M, Montaurier C, Mounier R, Pialoux V, Pequignot JM, Cottet-Emard JM, Coudert J, Fellmann N. Prolonged daytime exercise repeated over 4 days increases sleeping heart rate and metabolic rate. Can J Appl Physiol. 2003 Aug;28(4):616-29.

(8) Seale JL, Conway JM. Relationship between overnight energy expenditure and BMR measured in a room-sized calorimeter. Eur J Clin Nutr. 1999 Feb;53(2):107-11.

(9) Zhang K, Sun M, Werner P, Kovera AJ, Albu J, Pi-Sunyer FX, Boozer CN. Sleeping metabolic rate in relation to body mass index and body composition. Int J Obes Relat Metab Disord. 2002 Mar;26(3):376-83.

(10) JD Cameron et al. Increased meal frequency does not promote greater weight loss in subjects who were prescribed an 8-week equi-energetic energy-restricted diet. Br J Nutr. 2010 Apr;103(8):1098-101.

(11) Norton LE, Layman DK, Bunpo P, Anthony TG, Brana DV, Garlick PJ. The leucine content of a complete meal directs peak activation but not duration of skeletal muscle protein synthesis and Mammalian target of rapamycin signaling in rats. J Nutr. 2009 Jun;139(6):1103-9.

(12) Norton LE, Layman DK. Leucine regulates translation initiation of protein synthesis in skeletal muscle after exercise. J Nutr. 2006 Feb;136(2):533S-537S.

(13) Siri-Tarino PW, Sun Q, Hu FB, KRAUSS RM. Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease. Am J Clin Nutr. 2010 Mar;91(3):535-46. 

(14) Evenepoel P, Geypens B, Luypaerts A, Hiele M, Ghoos Y, Rutgeerts P. Digestibility of cooked and raw egg protein in humans as assessed by stable isotope te chiniques. J. Nutr. October 1, 1998 vol. 128 no. 10 1716-1722.

(15) M.C. Lopez-Berenguer et al. Effects of microwave cooking conditions on bioactive compounds present in broccoli in orescenes. J. Agric. Food. Chem.,55(24):10001-10007,2007.

(16) Lemon PW and Mullin JP. Effect of initial muscle glycogen levels on protein catabolism during exercise. J Appl Physiol 48: 624–629, 1980.

(17) Lee YS, Ha MS, and Lee YJ. The effects of various intensities and durations of exercise with and without glucose in milk ingestion on postexercise oxygen consumption. J Sports Med Physical Fitness 39: 341–347, 1999.

(18) Febbraio MA, Chiu A, Angus DJ, Arkinstall MJ, and Hawley JA. Effects of carbohydrate ingestion before and during exercise on glucose kinetics and performance. J Appl Physiol 89: 2220–2226, 2000.

(19) Pearson DR, Hamby DG, Russel W, Harris T: Long-term effects of creatine monohydrate on strength and power. J Strength Cond Res 13: 187–192, 1999

(20) Staples AW, et al. Carbohydrate does not augment exercise-induced protein acretion versus protein alone. Med Sci Sports Exerc. 2011 Jul;43(7):1154-61.

(21) Pascoe DD et al. Glycogen resynthesis in skeletal mscule following resistive exercise. Med Sci Sports Exerc. 1993 Mar;25(3):349-54.

(22) Mansell PI, Fellows IW, Macdonald IA. Enhanced thermogenic response to epinephrine after 48-h starvation in humans. Am J Physiol. 1990 Jan;258(1 Pt 2):R87-93.

(23) Soeters MR, et al. Intermittent fasting does not affect whole-body glucose, lipid, or protein metabolism. Am J Clin Nutr. (2009)