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Articles by Lyle McDonald

Lyle McDonald+ is the author of the Ketogenic Diet as well as the Rapid Fat Loss Handbook and the Guide to Flexible Dieting. He has been interested in all aspects of human performance physiology since becoming involved in competitive sports as a teenager. Pursuing a degree in Physiological Sciences from UCLA, he has devoted nearly 20 years of his life to studying human physiology and the science, art and practice of human performance, muscle gain, fat loss and body recomposition.

Athlete

Lyle has been involved, at various levels of success in competitive sports since his teens. Starting with triathlon, he spent altogether too many hours on his bike during college. Becoming involved with inline skating at the same time led him to compete for several years until he burned himself out with chronic overtraining. Many years passed until he decided to return to speed skating and move to the ice. He moved to Salt Lake City Utah to train full time at the Olympic oval, he is currently still there training with his coach Rex Albertson attempting to make the US National team or beyond.

Writer

Lyle has written for the print magazines (Flex and the now defunct Peak Training Journal), too many online sites to mention and has published 5 books on various aspects of exercise and diet.

Trainer

Over the years, in addition to working with the general public, Lyle has worked primarily with endurance athletes, a few powerlifters, and some bodybuilders. Through his books, articles and his forum, he has helped thousands lose fat, gain muscle and get stronger or perform better.

Ask Lyle McDonald #4

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Dear Lyle, Your advice has been the most valuable and useful information I have found while researching fitness and fat loss. I realize you are unable to answer all of your e-mails, but I would really appreciate some advice on fat loss for non-bodybuilding women. For the past 4 weeks I have been using an […]

Gaining Muscle Mass on a Vegetarian Diet

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Dear Lyle, I have been training for the past 5 months. I am a vegetarian. I want a good vegetarian diet that will help me gain Mass. Answer: I’ll say up front that I do not think a vegetarian diet is ideal for gaining muscle mass. Of course it depends on what degree of vegetarian […]

Ephedrine + Caffeine Stack with Yohimbine and Tyrosine

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Dear Lyle, I’m a big fan of yours Lyle as you have always provided invaluable advice for bodybuilders on the net! Lyle I was wondering if you can help me out. I am in the middle of losing bodyfat and cutting up. I have been on the ECA stack with 500 mg of l-tyrosine for […]

Improving the Ephedrine + Caffeine Stack

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Hi Lyle, My question has to do with the ECA stack (great article on it by Bryan Haycock).   I was wondering if yohimbe and/or grapefruit (naringenin) would enhance the stack further.  In Dan Duchaine’s book, yohimbe was referred to “letting off the brake where ECA was like stepping on the gas” and I read that naringenin has […]

Twinlab Ripped Fuel and Fertility

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Dear Lyle, I take a supplement called Ripped Fuel by Twinlab. I heard that it can affect a woman’s ability to reproduce.  Is this true? Answer: Oh good an easy one finally. To answer this let’s look at the ingredients in Twinlab’s Ripped Fuel: MaHuang: this is herbal ephedrine. It acts as a beta-agonist meaning […]

How Does DNP Work for Fat Loss?

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Dear Lyle, I am new to this life style, and I do not know a lot about these supplements. You were saying something in a letter about DNP. What the hell is that. I am somewhat like how you described in the letter. I am not at my desired body fat ratio 6’1 185-190 lbs. […]

Poor Results on BodyOpus Diet

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Dear Lyle, I’m sorta frustrated with the BodyOpus diet since my results were bad. In 6 weeks of dieting, I lost very little bodyfat, only 3 lbs. I ate 13 kcal/lb. and tried to keep carbs below 15 g and protein at .8 x my bodyweight. Carbup was mostly high glycemic carbs after workout with […]

Importance of Depleting Muscle Glycogen on Cyclical Ketogenic Diet

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Dear Lyle, I’ve been following the Body Opus diet for a couple months now, but not too precise. What I mean by that is that Monday and Tuesday training I’ve substituted, with Mike Mentzer’s advice to those who do not make continual gains, the consolidation routine. I do this by working out only every Monday […]

Cyclical Ketogenic Diet and High Intensity Activity

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Dear Lyle, My name is Kirk. I’m a 29 year old amateur. kickboxer. I suffered a nerve injury and wasn’t able to train. In this time I put on a lot of weight and have not been able to take it off. I, like yourself have been lean but not as lean as I would […]

Ask Lyle McDonald #3

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Dear Lyle, My name is Kirk. I’m a 29 year old amateur. kickboxer. I suffered a nerve injury and wasn’t able to train. In this time I put on a lot of weight and have not been able to take it off. I, like yourself have been lean but not as lean as I would […]