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.

Learn why you should never aim to have 14 inch thighs or 15 inch thighs—even if you’re naturally thin.

Just right; learn why your 22 inch thighs are perfectly normal—regardless of whether you’re a man or a woman.

Discover how to slim (or grow) your 23 inch legs.

Learn if your 24 inch legs are big (and how you can slim or build them).

Learn what the science has to say about having 25 inch legs.

Learn if your 26 inch quads are big or just plain normal.

Learn what causes people to have 27 inch thighs.

Learn why people have 28 inch quads with and without weight lifting.

Learn the common reasons for having 29 inch thighs.

See 3 real-life examples of men and women with 30 inch thighs.