Mark Gilbert

Mark Gilbert BSc (Nutrition)
Mark is an expert in sports nutrition and dietary supplements. He has over 20 years of experience working with the biggest names in the bodybuilding industry.


After all these years, barely a week goes by in which I don’t get asked about ketogenic dieting or carb cycling (usually both). So to settle all debate, let’s look at the main benefits and drawbacks of each.

Before we go into all that, let me just state that it’s a scientific fact that

For many years and until fairly recently, most bodybuilders used to “bulk up” in the off-season and between shows. The theory was that you had to be in a calorie surplus to gain muscle, so if you could take that calorie surplus to the

Metabolic Advantage: How Best to Boost your Metabolic Rate

When the MUSCLE INSIDER crew asked me to discuss things that boost metabolic rate, I very quickly realized that there are dozens! Of course, there are drugs such as thyroid (T3/T4), clenbuterol, the lethal DNP,

Ever wonder why some people can eat tons of carbs and more calories and not get fat? Or why some people have terrible diets and don’t exercise, yet live into their 90s? Or why some people eat too much salt but don’t get high blood pressure? As you may have guessed by the title of this article,

If you were around bodybuilding or were a hardcore gym-goer back in the 1990s or early 2000s, you’re probably familiar with ephedrine (or in its natural state, “ephedra,” from the herb called ma huang). You may also remember all of the controversy around it too. Ephedrine is a powerful stimulant

Okay guys, my tribute/contribution to MUSCLE INSIDER’s Arnold issue is the exercise that’s actually named after the man himself: the “Arnold press.” In the course of researching this lift, I did a few special, modified shoulder workouts. I have to admit I hadn’t used the Arnold press in years

I predict the two most revolutionary trends in health and fitness over the next several years will be in the areas of genetic testing and bacteria. The first is pretty obvious, but the second may come as a surprise. Then consider the 100 trillion tiny bugs and over 1,000 potential species living

How to get a good workout at a hotel while on the road

Okay, many of us have been there: You find yourself staying at a low-end hotel, you go down to the gym, and all that’s there is a broken spinning bike from 1976, covered in rust and cobwebs, and a padded decline ab

When it comes to water, some recommendations are all wet!

We’re always hearing different recommendations about how much water or liquid we should be consuming—eight glasses, one gallon, even two gallons! We’re told that it can detox the body, improve the skin, and even increase muscle

Sugar Alcohols: Are These Low-Calorie Ingredients Good or Bad?

A group of ingredients that’s getting more and more common in the supplements we buy (and that I often get asked about) is a category of nutrients called “sugar alcohols.” The reason for their popularity is