How long do you need to exercise to be in solid physical shape? According to some researchers, just 3 minutes! They say 30-second bursts of intense exercise delivers the same results as hours in the gym. The results are being called "ground breaking" and will lead to conventional medical textbooks on exercise being torn up. So why do short bursts of energy do just as much as long a long exercise session? Scientists aren't exactly sure, but they think it may have something to do with the ravenous appetite that is built up during many hours in the gym. The same appetite is not as demanding after a short burst workout. Here's how it works:
• Stretch and warmup for a few minutes.
• Go 80 to 90% of flat-out for 30 seconds.
• Rest up to a minute
• Repeat two more times.
• Do twice a week