Probably the most easy-to-use interval timer on the web.

 

Running program for people who are not accustomed to running. Get a complete plan for the next 16 weeks. The program is fairly simple - you run the same trip in two weeks and then proceed to the next level. Simple and effective - Print it, hang it on the fridge and start running!

Calculate the heart rate that corresponds to a specified intensity. Instant switch between using maximal heart rate or the more advanced heart rate reserve.

The 1 RM calculator allows you to calculate your maximal strength in a given exercise based on the number of repetitions you can can perform with a submaximal load.

The push-up test from "The Canadian Standardized Test of Fitness" rates your upper body strength based on the number of push-ups you can perform