I bought a treadmill just recently after my normal running routine was disrupted by work/ family commitments/ dark nights etc. (the usual stuff). I thought it would be boring but I can honestly say its been great fun and gives me a more intense workout in a shorter time than running outside. Don't get me wrong I miss the fresh air and the countryside but as a form of exercise it's great. AND the most important thing is I can fit in 20 to 30mins anytime, even if it's just me and the kids when my wife is out. It's very convenient.