What happens if I don't take a rest day?

Author: Jeanne Hermiston  |  Last update: Sunday, August 17, 2025

Every time you work out you create microscopic tears in your muscle tissues. When you rest, your muscles start to heal and grow back stronger, meaning you'll be able to do the same workout with less effort in the future. If you skip rest days, it could lead to longer spells out through injury.

Is it okay if I don't take a rest day?

Not only can not taking rest days lead to mental and physical burnout, but it can also lead to overtraining and make you more prone to injury. Overtraining, or pushing yourself too far, also decreases your immune system, making you more prone to getting sick.

Will your muscles grow without rest days?

Yes, having rest days is essential when training every day to build lean muscle without gaining fat. Rest days allow muscles to recover, repair, and grow. Overtraining without adequate rest can lead to fatigue and hinder muscle development. Balance intense workouts with rest for optimal results.

Is 7 days a week of gym okay?

Is working-out 7 days a week not good for your body? Yes. Working-out 7 days a week can lead to overtraining, which in turn leads to fatigue and injury. To avoid overtraining, you should only work out five days a week with at least one day of rest between workouts. --OR-- Yes.

What will happen if we don't take rest?

Higher stress levels

It all comes back to cortisol, the stress hormone: Sleep deprivation may raise cortisol levels, which can contribute to weight gain, heart disease, anxiety, signs of aging and so much more. “On the other hand,” Dr. Foldvary-Schaefer says, “a good night's sleep naturally reduces cortisol levels.”

DAY IN THE LIFE ON A REST DAY (Diet + Mobility Routine)

Can you get sick from not taking rest days?

Increased cortisol, as mentioned above, as well as adrenaline, suppress the immune system and research shows that 90 minutes of high-intensity exercise can make you more susceptible to illness for up to 72 hours afterward.

How long can you go without rest?

While you might be able to go a day or more without sleep, doing so is bad for your health. After just 24 hours with no sleep, you may experience effects like anxiety, irritability, and daytime sleepiness. The symptoms worsen the longer you go without sleep. After 36 hours, hallucinations might begin.

How do you know if you're overtraining?

When you're trying to tell if you're dealing with overtraining, consider these common symptoms:
  • Your Performance Declines. The hallmark sign of overtraining, Dr. ...
  • Fatigue and Soreness Ramp Up. ...
  • You Get Sick or Injured More Easily. ...
  • Sleeping Gets Harder. ...
  • Your Mood Changes. ...
  • Other Physical Symptoms Pop Up.

Is 2 days rest too much?

Rest One or Two Days Per Week. For the best performance and to reach your goals in the safest and most effective way possible, plan for one to two rest days per week. Olenick recommended spacing these out — take one rest day mid-week and the other on the weekend, or in between bigger workouts.

What does an active rest day look like?

Typical active recovery activities include walking, swimming, cycling, jogging, yoga, or active stretching (Ortiz et al. 2018). The key is to find an activity that's low-intensity and keeps your heart rate at 30-60% of your maximum heart rate.

How do I know I need a rest day?

In addition to being tired, you might suffer from headaches or mental fatigue, which can lead to moodiness and feeling off. If your body isn't feeling well, this can be a telltale sign that you need a rest day! One note: Working out is a well-known endorphin booster that can help improve your mood.

Can you lose muscle if you dont rest?

If you stop using your muscles, your body won't waste the energy it needs to take care of them. Instead, your body will start to break your muscles down, which causes them to decrease in size and strength. Disuse atrophy may affect you if you: Lead a sedentary lifestyle.

Should I eat less on rest days?

If they want weight loss along with muscle growth, reducing calories on rest days can help. The body still needs nutrients to aid in recovery. As long as these needs are met, calories can be lowered slightly. If the client only wants to build muscle, it may make more sense to keep calorie intake relatively the same.

What happens if you skip rest days?

If you skip rest days, it could lead to longer spells out through injury. Working out when your body and mind are tired means you're more likely to have bad form, trip or stumble. You're also at risk of overuse injuries as you constantly stress and strain the body and don't allow it the necessary time to repair itself.

Will I gain weight if I skip a day of exercise?

However, skipping a workout here and there typically doesn't cause weight gain, and taking regular rest days is healthy for muscle recovery and preventing injury.

Do muscles grow on rest days?

Downtime between workouts (whether you're lifting, doing cardio or training for a sport) is when our bodies have a chance to actually build muscle. Strenuous workouts cause muscle breakdown, while rest allows our bodies to build it back up.

Is working out 7 days a week bad?

Working out every day is okay as long as you do not overexert yourself. It's important to take care of your body so you can produce efforts that support your goals.

Should I go to the gym if I'm tired?

It's important to acknowledge when you're feeling tired and adjust your workout intensity accordingly. Overexerting can lead to burnout or injury. Sometimes, a gentle stretch or restorative yoga session might be more beneficial.

Is it okay to skip the gym for a day?

You're entitled to a day off from your usual workout. After a big event, you might want to go on a walk and do some mild stretching to help alleviate any soreness, but it's probably a good idea to give yourself a break so you can properly recover.

What are signs of over exercising?

Here are some symptoms of too much exercise:
  • Being unable to perform at the same level.
  • Needing longer periods of rest.
  • Feeling tired.
  • Being depressed.
  • Having mood swings or irritability.
  • Having trouble sleeping.
  • Feeling sore muscles or heavy limbs.
  • Getting overuse injuries.

What does an overused muscle feel like?

Symptoms of overuse injuries include: tingling, numbness, or pain in the affected area. stiffness or soreness in the neck or back. feelings of weakness or fatigue in the hands, arms, or legs.

Can you damage your heart by exercising too hard?

But in some cases, extreme exercise can damage the heart. Research is showing that a small percentage of middle-aged and older athletes who compete in endurance events over many years may be at higher risk for developing atrial fibrillation – an irregular heartbeat – and other heart problems.

Will your body eventually force you to sleep?

Dr. Winter says that as much as you may try to force yourself to stay awake, eventually your brain gets fixated on sleep and "at a certain point there's not much you can do about it." That's a good thing—you really don't want to go without sleep.

What's the longest someone has slept?

The record for the world's longest sleep is 11 days.

Is sleep debt a thing?

If you regularly lose sleep or choose to sleep less than needed, the sleep loss adds up. The total sleep lost is called your sleep debt. For example, if you lose 2 hours of sleep each night, you'll have a sleep debt of 14 hours after a week. Some people nap to deal with sleepiness.

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