Perhaps over stretched this morning, causing cramp at left part of back. Didn't realize was cramp, gotten worse through out the day, left for home after first job after collecting $35 payment.
Trying very hard to sleep, flip and turn very painful. After a moment of rest, seemed better, realizing the ache is similar to muscle cramp, thus reason enough for me to endure to pain and force but slowly turning and twisting, as I would with leg cramps.
Better now, able to get off bed, cook.
In this case, pain is good!
The speed of recovery seems to be proportional to the hours of sleep.