Decrease
Causes it to give a note of higher frequency
Over tightening the drain plug.
Tightening in a mans stomach may be caused from a stomach flu. It could also be due to muscle spasms. If they hurt, see a doctor.
Any disorder with the ribs can certainly cause lumbar pain. Perhaps the body is favoring the ribs and carrying itself in a way that causes lumbar strain.
You're pregnant. Sucks to suck
appendix or kidney?
possible broken rib
If somebody punches you there.
Muscle spasm
Contracture is defined as the shortening of the connective tissue. The common opinion of surgeons is that flexion contracture is due to tightening of the posterior capsule combined with the tightening of biceps femoris and collateral ligaments.
its called a fuctonidal infection