File :-(, x, )
Anonymous
Hey /fit/. I'm going to be doing HIIT tomorrow.

Question:

How do you guys keep track of time while running? I will be doing 1 minute run, 30 second sprint but I don't know how to keep track of time and when to begin my sprint.

???
>> Anonymous
Sprint as hard as you possibly can, until you can't sprint anymore... this should be around 80-100m if you're in decent shape. That's about the length of one side of a standard running track.
>> Anonymous
http://www.hiitsource.com/files/HIIT.mp3

Enjoy.
>> Anonymous
How long are the intervals on the mp3?
>> Anonymous
>>428165
Its a surprise
>> Anonymous
Is this the only way?
>> Anonymous
>>428188
Yes.