What does putting a bar of soap in the bed do? I’ve been experiencing cramps for over 3 yrs now and drs have prescribed potassium & magnesium meds. No help. I also dropped a lot of weight for no reason, 20 pounds. I used to exercise a lot ( 5x/week) never had any cramps. I’ve been diagnosed with arthritis in my back L4&L5 and can not exercise anymore. This is when the cramps started. Have taken so many test to figure out weight loss, everything normal. I’ve been able to bring my weight up to 115 by eating more protein and a couple of protein shakes a day. The cramping is the most frustrating part. I don’t get cramps every night but they still happen. Also get them in the day. Tried to go to aquatic exercise class but get cramps in the pool.