How helpful are BCAA/HMB/Creatine supplements for preserving muscle mass if you are running a caloric deficit?

BCAAs (particularly L-Leucine supplemented with Vitamin B6) and HMB become more efficacious (i.e. useful, practical and important) as anti-catabolic agents when in a situation of calorie deficit, a conclusion that has been supported in a number of relatively solid scientific investigations. My own opinion during 40 years of experience as a trainer and gym owner, as well as a competitive bodybuilder, also supports this claim. The further addition of creatine, especially in conjunction with a good resistance training scheme and not-too-much-cardiovascular and endurance training, will guard against the inevitable and real threat… Read More

Everyone keeps talking about either strength training or cardio for fat loss. What role does muscular endurance training (lighter weights, higher reps) have in fat loss mechanisms?

The answer has to do with mitochondria.

I want to add 20kg. of lean muscle mass. Can I accomplish this on a Vegetarian Diet?

20kg. of muscle?! Who knows? That much muscle mass would be difficult to gain on any kind of diet, vegan, carnivore, steroid or otherwise.

What is the probable effect of a KETO diet on LDL (bad) cholesterol, if any?

One man’s meat is another’s poison.

How can I naturally increase my metabolism, what exercises are best to speed up metabolic activity?

Depends on just how fast you want to go.