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.

Find out if your 41 inch chest is big, small, or just plain average.

Discover how big a 42 inch chest really is and learn what a 42 in chest actually looks like.

How big is a 43 inch chest for a man who lifts weights?

Discover how big a 44 inch chest really is for a man who lifts weights regularly.

Learn how big a 45 inch chest really is for a natural lifter.

How big is a 46 inch chest for a natural lifter?

Discover the genetic factors that are required to build a 47 inch chest.

Learn all the ins and outs of having a 48 inch chest.

Discover what it takes to build a 49 inch chest.

Discover if you have the genetics to sculpt a chiseled 50 inch chest.