Manufacturers are starting to make smaller gliders as more and more women enter the sport. There are some physical demands, especially when launching the glider. You'll need to run with your 50lbs glider down a hill to launch. While in the air it requires much less strength. Your body is suspended from the glider's frame, and shifting your weight steers the glider.
Landing also requires strength to stall the glider.
If you're strong enough to launch the glider, you're strong enough to land it. The sister sport of hang gliding is paragliding. A hang glider is a rigid structure made up of ribs, cross tube, control bar, and keel. The pilot controls the glider by shifting their weight on the control bar. A paraglider is a non-rigid airfoil, consisting of inflatable cells and looks similar to a parachute.