>>284622756
As far as the arm muscles are concerned it's really just an imaginary gun. The more you play, the more you train those muscles to hold a ready stance without excessive shaking or getting too heavy to hold. There are virtual stock options which simulate the stock orienting itself to your shoulder so you can focus on holding the front end of the gun up and aimed at the enemy, It's quite limiting in Pavlov but it helps when you're new or need the stability for sniping.