Four by Four (fa7b3d)

发行商 Bhavik Patel AppTrack Ninja。

Norwegian 4x4 interval training is the gold standard for improving VO2 max -- and Four by Four is the only app built specifically to coach you through every second of it, live from your Apple Watch. The protocol is simple: four rounds of 4-minute high-intensity intervals at 85-95% of your max heart rate, separated by 3-minute active recovery periods. Researchers at the Norwegian University of Science and Technology proved this method delivers dramatic cardiovascular gains in just weeks. Four by Four turns that science into a guided workout you can do anywhere. HOW IT WORKS Strap on your Apple…

分类: Health & Fitness, Lifestyle

的 App Store 排名、截图、估算和类似应用。 Four by Four (fa7b3d).