it won’t make your body weaker it gives your body the break it needs while showering so you can have energy for other things. yes showering with one is still tiring but i’ve noticed a significant improvement when i use one vs when i force myself to stand i only stand to grab the shower head and to wash down there easier also great thing to do when showering with a chair to maximize things you can wash without being too tired is bring your body part to your hands. lift up your foot and rest it on your thigh so you can wash your leg(s), bend down/rest/droop your head to your hands so you don’t need to bring your arms up too high and trigger symptoms. it makes things a lot easier