SGpork SG not again... there is no best time...more like perfer what time. i usually do it in the morning..if not evening..sometimes afternoon.. anytime.. just give me my shoe..
Myzzy SG 4am or 11pm otherwise in other time of the day , you can opt for a jog on the treadmill in the gym, got air-conditioner somemore =)
FocusPoint SG Morning and late evening is the best time. Never in the afternoon directly under the sun. It will dehydrate you too fast and you might faint. Unless you run under shades, which still not so advisable