AInThe Ascend LabbyAmira Zainal· Aug 22The Recovery Metric Everyone Tracks and Almost Nobody Uses ProperlyHeart rate variability is a real signal. It is also the most misread number in consumer fitness.62 1
AAmira Zainal· Aug 3Training Age Matters More Than Actual AgeWhy the same programme produces wildly different results in two people with identical birthdays.107 2
DInThe Ascend LabbyDaniel Okoye· Jul 10Sleep Debt Is Not a Bank AccountYou cannot repay it on Saturday, and the metaphor is doing real damage to how people plan their weeks.82 1