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Version
1.0
Size
6.31 Mb
Updated
8 years ago
Released
22 Jun 2017
Screenshots
Description
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
Estimates
Availability
Devices
iPad2Wifi
iPad23G
iPhone4S
iPadThirdGen
iPadThirdGen4G
iPhone5
iPodTouchFifthGen
iPadFourthGen
iPadFourthGen4G
iPadMini
iPadMini4G
iPhone5c
iPhone5s
iPadAir
iPadAirCellular
iPadMiniRetina
iPadMiniRetinaCellular
iPhone6
iPhone6Plus
iPadAir2
iPadAir2Cellular
iPadMini3
iPadMini3Cellular
iPodTouchSixthGen
iPhone6s
iPhone6sPlus
iPadMini4
iPadMini4Cellular
iPadPro
iPadProCellular
iPadPro97
iPadPro97Cellular
iPhoneSE
iPhone7
iPhone7Plus
iPad611
iPad612
iPad71
iPad72
iPad73
iPad74
iPhone8
iPhone8Plus
iPhoneX
Pricing by country
| Country | Price |
|---|---|
| Canada | free |
| China | free |
| France | free |
| Germany | free |
| Italy | free |
| Netherlands | free |
| Portugal | free |
| Spain | free |
| UK | free |
| India | free |
| Japan | free |
| Poland | free |
| Russia | free |
| Turkey | free |
| USA | free |
| Korea, Republic Of | free |
| Ukraine | free |
