not age at all, Im 40 and still ride, run, train four times a week plus cycle to work everyday. I do it 'cause I love it… and the added bonus that im fit healthy and young for my age. Im doing much more running now than I have for a long time and am thoroughly enjoying the events side of things.
As above, try something new for a bit… swimming, circuit training ?
BMF is good… these guys will get you motivated… I did it throughout 2006… great fun. Lots of short sprints, press ups, sit ups and circuit training type stuff all combined into relay games, fun competition, motivation & humour.
British Military Fitness[/url]
Kev