12/29/2025
Short bursts of effort followed by recovery train the heart, lungs, and muscles to work more efficiently.
Less time doesn’t mean less effective.
References
• American College of Sports Medicine (ACSM)
ACSM Position Stand: High-Intensity Interval Training
Finds HIIT improves cardiovascular fitness efficiently compared to moderate continuous training.
• Journal of Physiology
Gibala et al.
Research demonstrating that short-duration HIIT produces similar or superior cardiovascular adaptations compared to longer steady-state exercise.
• National Institutes of Health (NIH)
Reviews showing HIIT improves VO₂ max, insulin sensitivity, and cardiovascular health with reduced time commitment.