TEM1621No.ofPages2TrendsinEndocrinologyMetabolismSpotlightIshigh-intensityintervalintensitiesthantomoderateorlowintensi-periodsbetweeneachweekwouldhavetrainingharmfultoties[5,6].Controversially,arecentpaperbeenindicated.Cumulative(carry-over)health?publishedinCellMetabolismsuggestseffectsofthesingletrainingweekscannotthattoomuchHIITcanhavenegativebeprecludedbystringingtogetherdifferentNiklasJoi...