Old 12th Jan 2009, 19:38
  #16 (permalink)  
bnt
 
Join Date: Feb 2007
Location: Dublin, Ireland. (No, I just live here.)
Posts: 713
In all serious, though: when you exercise, don't overdo it. If you just start running on the road at that weight, you're putting severe forces on your limbs, especially the joints.

Then there's the heart: there's a "max heart rate" for any person, which is roughly 220 - your age, and you can measure your resting heart rate first thing in the morning. The target heart rate during exercise is at a certain % along that range. Too high, you're just stressing your system, not exercising effectively. This web page gives more details on the calculations. You can get a cheap heart rate monitor from Argos or something, or a more expensive Polar watch if you're flush.
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