Exercise, at a stretch.

Have had to find a form of exercise other than running. Every time I
run, no matter how long I leave between runs, my knees feel terrible
and my back aches like a pensioner. A combination of swimming at The
British Club and yoga seem to be doing the trick. Leaves you feeling
nice and loose, expanded by stretching and pulling rather than
compacted by endless pounding of the pavements. A worthwhile regimen.