Mar 24, 2026Physical ActivitySprint Intervals: Faster Workouts, Unsettled Heart EvidenceSprint interval training can raise fitness, but a 2025 umbrella review found no proven edge over steady cardio—and much of the evidence rates low quality.sprint interval trainingvo2 maxhiitcardiorespiratory fitnessRead article →
Mar 24, 2026Physical ActivityHIIT vs. SIT vs. RST for VO2max: What the Rankings MeanA 51-study network meta-analysis reportedly ranks RST first for athlete VO2max. Here's what the evidence supports—and what it cannot yet prove.hiitvo2 maxsprint interval trainingcardio trainingRead article →
Mar 7, 2026Physical ActivityBest Exercise for Visceral Fat Depends on Age and GoalAerobic exercise and HIIT reduce visceral fat in adults and youth, but the best dose in adults is less certain than many guides claim.hiitvisceral fataerobic exercisebody compositionRead article →
Feb 26, 2026Physical ActivitySprint Intervals and Strength: What the 2026 Data Actually ShowA 2026 meta-analysis suggests sprint interval training can raise VO2max without blunting strength gains, but the evidence base is still small.sprint interval trainingconcurrent trainingvo2 maxmuscle protein synthesisRead article →