Four By Four Running

Four by four is the scientifically proven[1], efficient way to get in shape quickly. It works both for athletes and couch potatoes.

You alternate between running quickly for four minutes and slowly for three minutes. You do four repetitions, for a total of 28 minutes.

[1] Aerobic high-intensity intervals improve VO2max more than moderate training, Helgerud et. al., 2007
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Additional Information

Updated
June 21, 2017
Size
6.6M
Installs
1+
Current Version
1.0.0
Requires Android
4.1 and up
Content Rating
Everyone
Permissions
Offered By
Anders Schau Knatten
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