The pain associated with PMS is not natural. Most women don’t have totally regulated cycles, and PMS symptoms can change over time, even month-to-month.
Physical fitness is one factor that can reduce lower back pain. Pain is often caused by a lack of muscle conditioning. The core muscle group, consisting of the abdominal, pelvic, hip and lower back muscles, is responsible for supporting the spine’s alignment and the weight of the upper body. This study supports the long-established reasoning that muscle conditioning contributes to decreased lower back pain.
Chiropractors use decompression machines. Here is an example of the ATM2.
Upper back pain can severely limit your range of motion and interfere with posture. If it hurts too much to move through a normal range of motion, it is time to seek out a chiropractor.
Back pain can be treated with decompression machines provided by a chiropractor. Or you can always try natural decompression with an inversion table.