Jogging with a 20lb pound weight vest on

[Joey Giardello]

Will this improve my upper body strength and size?

[josh-hill]

i shouldnt think so. as far as i know the only way to put on size is to hit the gym

[Spartacus Sully]

Sprinting, possibly.

jogging, no.

[ScottDBA]

Good way to mess your knees up....

[mrboxer]

Will this improve my upper body strength and size?

for what,are you getting paid,you are jogging with a weight on your back,i would not do this type of strenuous activity

[fdotorres]

Will this improve my upper body strength and size?

the only thing it'll improve is the chances of getting your knees ****ed up