Tacking onto my prev. post concerning Fartlek’s and Intervals, I ran across this:

Interval Timers will eliminate the need to count bushes and light poles.

Has other uses. Bring it into the gym, you can place it on vibrate so your not beeping all over the place, unless your into that.

Take it home, for home workouts you can set it to beep at customized intervals as you circuit train.

Tracks your rest periods, tells you when to change x-ersizes counts all your intervals. $20 Bucks. Perfect.

P.S. Its tiny and clips on to ur pants/shirt

Buy me at:http://www.gymboss.com/interval.php