No time for workouts? You're not alone. What if just 60 seconds of intense exercise could keep you fit?
It sounds too good to be true, but a groundbreaking study from McMaster University confirms it: 60 seconds of high-intensity exercise provides health gains equivalent to 45 minutes of moderate activity.
This research offers hope for busy professionals and those seeking efficient fitness routines.
Researchers at McMaster University recruited 25 inactive volunteers and assessed their fitness, cardiovascular health, and overall condition.
Participants were divided into three groups:
1. Control group: No exercise.
2. Moderate endurance: 2-minute warm-up, 45 minutes on a stationary bike, 3-minute cool-down.
3. High-intensity interval training (HIIT): 2-minute warm-up, three 20-second all-out sprints with 2-minute recoveries, 3-minute cool-down. Total: 10 minutes per session, with just 1 minute of intense effort.
Sessions occurred three times weekly for three months.
The moderate group logged 27 hours total. The HIIT group: 6 hours, including only 36 minutes of intense effort.
Post-study assessments showed both exercise groups achieved nearly identical improvements: 20% increase in endurance, better insulin sensitivity, and enhanced muscle power and oxygen uptake. The control group saw no changes.
Neither approach outperformed the other—HIIT just saves massive time.
Should you switch to HIIT? "It depends on your goals," says Martin Gibala, PhD, professor of kinesiology at McMaster University.
"Elite athletes benefit from combining both. For those short on time seeking health gains, our data shows 1 minute of intense exercise, done regularly, delivers substantial benefits."
HIIT is ideal for time-strapped individuals. Convinced? Explore our interval training exercises here.
