James, thanks for stopping by.
The men in the foreground are not doing push-ups, as I too thought initially.
They are pilgrims who have journeyed from local villages, not by bus or walking..but by moving their hands forward, and then their legs. One step at a time like you seen here.
They have come to main Buddhist Pilgrim Shrine in Lhasa, Tibet. Some covering the distances like you see her. Others talking one step forward, seated, then standing up. Then going down and it continues.
Cheers.
An interesting image Fahim , life seems to have stopped for a moment except for one doing the push-ups.