(..or perhaps already do! Feel free to check a few if you can't decide!)
Improved Sleep The age old cure for sleeplessness (even before the word insomnia existed) was a warm bath. Research has shown that soaking in hot water before bedtime leads to better, deeper and more restful sleep.
Sore Muscles/Joints/Arthritis Relief When joints are damaged or inflamed due to injury or arthritis, muscles become buckle up and become more tense in an effort to protect themselves. Hot water immersion can help alleviate joint pain and resulting muscle soreness, as well as muscle pulls and strains.
Weight Loss/Improved Metabolism More healthy than exercise or not, it is arguably a more relaxing way to increase your heart rate to promote healthy heart function which can often lead to metabolism increase and weight loss. Be sure to include your doctor in the decision to undergo any hot water treatments.