You can get in and out of the gym, or start and finish your at home fitness log in less than half the time boosting your resting metabolic rate, which means thatthe amount of calories you burn while sitting, sleeping, ... increase.
"I spoke with two nationally known fitness experts this week, Mike Boyle and Mark Verstegen, and they both recommend high-intensity interval training (HIIT) instead of lower-intensity endurance workouts such as jogging, walking on a stair mill, riding a stationary bike or rowing at a steady pace."1
Would you know why ? just read...
But firstly let's focus about HIIT ;
High-intensity interval training's concept:
"strenuous physical activity as vigorously as you can for a short duration, then rest or decrease intensity for a slightly longer duration, and then go all out again. These training sessions are typically done in 20 minutes or less and sometimes 10 minutes or less."1 While
"Typical lower-intensity "cardio" sessions start at 30 minutes and can be as long as a couple of hours."1
Now everyone knows what we talk about let's face the HOW or should I say the WHY...
"When you're working hard, there comesa point when you don't have enough oxygen for the muscles to function. So your body begins breaking down carbohydrates to provide those muscles with energy. This absence of oxygen, known as an anaerobic state, is tolerablefor short periods, but then lactic acid begins to build, you feel a burning sensation."1 [You start burning your fat reserve]
HIIT training helps raise your metabolic threshold, studies have shown. And the intensity of the session also challenges muscles to work harder so they become stronger. Plus it can boost your resting metabolic rate, which means that the amount of calories you burn while sitting, sleeping, ... increase.
[[1]Ron Kaspriske,I'm a hack of all trades, master of none, but I specialize in covering golf fitness and the rules of thegame.
