When my back pain flares up I often find that riding brings immense relief as it decompresses things... so quite often I am up and out late cruising around.

Night rides in the summer can't be beat... mountain biking in the dark is a rush... if you have the right lights.

My folder is probably the best equipped for night riding as it has a 2 watt led and a 10 watt halogen up front and when you switch these on they turn night into day and are the same lights I use when I off road at night.