Interval Training

Short, hard bursts

What does interval Training do to your body?

Alternating hard efforts and recovery improves cardiorespiratory fitness efficiently.

Evidence & sources

• High-intensity interval training improves cardiorespiratory fitness, comparable to or greater than moderate continuous training. Evidence: moderate. Known: Meta-analyses of RCTs. Unknown: Long-term adherence varies. Source: Milanović et al., Sports Medicine, Effectiveness of HIT vs continuous endurance training for VO2max improvements (2015).

Connected topics

• Aerobic Activity
• Heart
• Lungs
• Energy Metabolism
• Creatine

Try it in your browser

General education only, not medical advice. Drafted Oct 2026 · pending qualified expert review.