If 100 or 1000 repetitions is too many, is one working posture too few? YES!
Even standing for a long time in optimal posture like a ‘BeefEater’ can cause discomfort and pain.
The muscles that help us with posture are the hardest workers in the body. They turn on and off as we move from position to position. But, if we stay in one position for too long, they can get tired and sore.