James Jackson

James Jackson is a personal trainer who uses his expertise in strength and conditioning to create helpful workout tutorials that show fitness enthusiasts how to build muscle while staying safe in the gym. He draws on the latest sports science data as well as tried and tested training techniques to get the best results for his clients without them having to live in the gym.

Is it bad to only have 9 inch arms?

Learn if 6 inch, 7 inch, and 8 inch arms are normal for your age, height, and build.

Here’s what it really takes for natural lifters to build 19 inch arms.

Learn what it really takes to get 20 inch biceps as a natural lifter.

Can natural lifters really get 21 inch arms?

Discover if you have the genetics to build 22 inch biceps.

Who in the world has 23 inch arms?

Here are 3 mass monsters who built colossal 24 inch biceps.

Discover if anyone has ever built 32 inch biceps.

Here are the bodybuilders with the largest biceps ever recorded.