Not getting enough sleep can impact your time at the gym. A lack of sleep can cause daytime fatigue and sluggishness, making you less likely and less motivated to exercise. In addition, you’re more likely to get tired easier and earlier during physical activity. Lack of sleep may decrease your exercise motivation, quantity and intensity. If you're someone who doesn't particularly enjoy exercise or hitting the gym, not prioritizing sleep will make something you don't particularly enjoy almost unbearable. When you're suffering from sleep deprivation everything you do feels more challenging, and more specifically your workouts.
Not to mention, if you’re exhausted, you’re much more likely to skip the gym. Even if you do make it out, you won’t have the energy to train to the best of your ability. A decent night’s sleep will help keep you energized and motivated through your workout. Proper sleep is vital to help you perform optimally during training sessions, boost endurance, and enhance mindset for the best results. It can be difficult to get enough sleep every night. Between work, family, responsibilities, planning and cooking healthy meals and consistent exercise, sleep can get put on the backburner. But if you really want to be healthy and lose weight, make your nightly shuteye a priority.
3. Lack of Sleep Affects Muscle Growth
No matter what your fitness goals are, having some muscle on your body is important, as having muscle helps you burn fat and stay young.
A lack of sleep makes it harder for your body to recover from exercise by slowing down the production of human growth hormone—your natural source of anti-aging and fat-burning that also facilitates recovery. Human growth hormone is one of the primary compounds that allows muscles to recover and grow.
Your body and muscles need time to repair while you sleep so you can push yourself the next day. You produce the most growth hormone while you're sleeping, which helps burn fat as well as repair and build muscles so you can increase strength and lose weight. And since the more muscle you have, the higher your metabolism, not sleeping enough could be affecting how effectively your body burns through calories. You won’t have as much muscle if you’re not getting enough sleep.
4. Lack of Sleep Makes You stressed out and Gain Weight
Not getting enough sleep also makes you more stressed out which in turn makes it more difficult for you to control your appetite. Cortisol is the stress hormone that is frequently associated with fat gain. When you don't sleep enough, your body will produce more of this stress hormone that activates the reward centers in your brain that make you want food. Many Studies show exactly how sleep loss creates an internal battle that makes it almost impossible to lose weight
Cortisol activates the reward centers in your brain and makes you crave food which means that you’ll need to eat more food than you normally would in order to feel satisfied.
At the same time, the loss of sleep causes your body to produce a combination or hormones that shut down the areas of your brain that leave you feeling satisfied after a meal.
This means you feel hungry all the time—even if you just ate a big meal and creating a vicious cycle. Not enough sleep means you're always hungry, reaching for bigger portions, and desiring every type of food that is bad for you—and you don't have the proper brain functioning to tell yourself, "No!"
5. Lack of Sleep Hampers Your Metabolism and Contributes to Weight Gain
So it’s not so much that if you sleep, you’ll lose weight, but it is that too little sleep hampers your metabolism and contributes to weight gain.
If you are chronically sleep-deprived and consume more high-calorie foods, it's likely those calories will be deposited as fat around your middle.
Poor sleep can cause cells to become insulin resistant. Insulin is a hormone needed to change sugar, starches, and other food into energy and so sleep deprivation can make your metabolism become groggy.
Here’s why that’s bad, when your body doesn't respond properly to insulin, your body has trouble processing fats from your bloodstream, so it ends up storing them as fat.
Countering an occasional sleepless night with sweets the next day won't necessarily set you back too far, but you may gain weight if sleep deprivation and overeating become your daily routine.
There are no guarantees that sleeping more will translate in to pounds lost, but if you have chronic sleep deprivation, or lack of quality sleep and you seek to correct the problem, you may find it will probably be easier to lose weight.