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 whether or not it’s humanly possible to perform a 150 pound dumbbell curl.

Is curling 10 kg challenging enough to build your biceps?

Is performing 50 lb dumbbell curls an impressive feat of strength?

Are you strong if you can do 40 lb dumbbell curls for reps?

Is curling 30 pounds good for a weight lifter?

Are you strong if you can perform 45 lb dumbbell curls for reps?

Learn if a 60 pound dumbbell curl is good for a natural lifter.

How strong are you if you can curl 70 pound dumbbells for reps?

Is dumbbell curling 25 lbs challenging enough to build your biceps?

Learn how to make bicep gains with 20 lb dumbbell curls.