a total of 25 minutes.
90 seconds of slow running and 1 minute of walking for a total of 25 minutes.
2 minutes of slow running and 30 seconds of walking for a total of 25 minutes.
5 minutes of slow running and 2 minutes of walking for a total of 25 minutes.
run slowly for 20 minutes.
run slowly for 22 minutes.
run slowly for 25 minutes. 