Cardio exerts two benefits: It burns calories and affects hormone levels in the body. Specifically, cardio helps raise levels of norepinephrine. Yet when you do cardio it makes a big difference in how your body handles the hormonal changes. Cardio on an empty stomach allows norepinephrine to readily target fat cells, which triggers maximal fat-burning. On the flip side, if you eat before doing cardio, and particularly if you eat carbs, the fat-blocking hormone insulin rises, making your body less effective at burning fat.
When it comes to the rate at which progress can be made fat loss is far different from muscle growth. Whereas building muscle is a slow process, fat loss can take place at a pretty rapid pace. We have all seen the commercials that promise to help you lose 10-20 lbs. in a few weeks. While it is entirely possible to lose huge amounts of weight in short periods of time, this is not what we are aiming for.
“Speed is key—move, walk, or run a little faster and you’ll burn more total calories,” says Kravitz. In fact, changing up your walking pace quickly and frequently can help you melt up to 20% more calories, compared with maintaining a constant speed, according to a 2015 study from The Ohio State University. Try speeding up for 30 seconds, then walking at a comfy pace for three minutes.

Want to burn more fat? Sleep more because the impact of sleep on weight loss is significant. The importance of sound sleep is the #1 non-negotiable – it is the time your body requires to heal, rest and power up for the next day. By not getting enough sleep, you are putting stress on your body and increase the hormones that make you even more tired – which leads your body to STORE fat instead of burn fat! Besides feeling excessively tired, lack of sound sleep also spurs bad carb cravings and caffeine which can become a vicious cycle that millions of people are currently stuck in. Tips: Stop all technology at least 30 minutes before bed, invest in a great bed/pillow, use blackout curtains and try doing something calm and restful before bed like reading. Sip on some sleepy time or chamomile tea 60 minutes before bed for the calming effects of the herbs.
The runner’s high is real: a Journal of Experimental Biology study shows that running releases endocannabinoids, which are associated with pleasure and could keep you coming back for more. But don’t worry if the idea of a runner’s high feels more distant than a marathon finish-line. You just need to move past the point in which running totally sucks.
First off, insulin is one of the most anabolic/anti-catabolic hormones in the human body. Insulin binds with the muscle cell membrane that triggers an onslaught reactions that lead to growth. From an anti-catabolic standpoint insulin keeps the catabolic hormone cortisol at bay. One of cortisol functions is to breakdown proteins (muscle tissue) and convert it to energy. When insulin levels are high cortisol levels are lower. This is the primary anti-catabolic power of insulin.

The prevailing formula for a long time on how much fat you’re going to burn was calories in minus calories out, based on your basal metabolic rate (BMR) and exercise efforts, explains strength and performance specialist Joel Seedman, Ph.D., owner of Advanced Human Performance in Atlanta. But with all the different biochemical reactions in the body, hormonal response, and endocrine function, there are an infinite number of factors that can affect how your body is storing and breaking down calories.
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