In the BBC special, The Truth About Exercise, Dr Michael Mosley MD. showed that 1 minute of high intensity training or HIT, can be as effective as 45 minutes of aerobic activity.
HIT requires short bouts of all out intensity like running, biking, hill climbing, etc for 3, 20 second intervals (with a 1 minute rest in between).
Results showed a 20% decrease in insulin sensitivity in as little as 12 minutes of combined exercise over 12 weeks. And for some, aerobic capacity also improves.
Or if that isn’t you thing, Nitric Oxide Burst exercises can help grow more mitochondria for energy and endurance.
