Exercising after waking up can boost metabolism and set a positive tone, while evening workouts can relieve stress and improve sleep for many, as long as intense activity ends 1-2 hours before bed to allow your heart rate to slow and body to cool down. The best time depends on your goals and body, but consistency is key; morning workouts might aid weight loss by curbing appetite, but afternoon/evening exercise can peak muscle performance, so listen to your body and find what you can stick with.
Improve Performance and Endurance
Exercising in the morning kick-starts your metabolism and helps you burn more calories all around the day in comparison to an evening workout. Even with a 20-minute yoga, cycling, or spin bike exercise session, you can have a good start to your day.
Aerobic exercise causes the body to release endorphins.
These chemicals can create a level of activity in the brain that keeps some people awake. These individuals should exercise at least 1 to 2 hours before going to bed, giving endorphin levels time to wash out and “the brain time to wind down,” she says.
Despite the findings in this particular study, I generally recommend against strenuous physical activity for at least two hours before getting into bed. In addition to regular exercise, you can help achieving quality sleep by doing the following: Set a regular bedtime and adopt a relaxing bedtime routine.
The 3-2-1 bedtime method is a simple sleep hygiene strategy: stop eating 3 hours before bed, stop working 2 hours before bed, and stop using screens (phones, tablets, TVs) 1 hour before sleep, helping your body transition to rest by reducing stimulants and digestive load for better sleep quality. A more detailed version adds 10 hours (no caffeine) and 0 (no snoozing) for a 10-3-2-1-0 rule.
The "5 5 5 30 rule" is a popular, simple morning workout routine popularized by Sahil Bloom, involving 5 push-ups, 5 squats, 5 lunges (per leg), and a 30-second plank done immediately after waking up to build energy, focus, and consistency by kickstarting metabolism and getting blood flowing with minimal time and no equipment. It's designed to overcome inertia, boost physical and mental readiness for the day, and serve as a foundation for better habits, making it ideal for beginners or those needing a quick start.
The 70/30 rule in fitness suggests that 70% of your physical results (especially weight loss and body composition) come from nutrition and diet, while only 30% comes from exercise (gym workouts), emphasizing that what you eat is far more crucial for changing your physique than just working out, though both are important for overall health and muscle building. It highlights that while the gym breaks down muscles (the 30% effort), the kitchen (the 70%) provides the essential fuel, protein, and rest for them to repair and grow stronger.
"The theory behind why late-night workouts may interfere with our natural sleep-wake cycle is that not only can they raise our core body temperature, but they can also increase our heart rate," says Dr. Ram.
Strenuous physical activity right before night, on the other hand, may disrupt your sleep and is one of the many exercise mistakes you should avoid before sleep. Running, high-intensity interval training (HIIT), and lifting heavy weights are examples of such routines.
Is Working Out On an Empty Stomach Bad for You? According to Roper, fasted exercise is generally safe for most people, but it may lead to side effects. “Because blood glucose gets depleted during fasting cardio, you can experience some side effects including lightheadedness and dizziness,” she said.
The benefits of morning exercise
Women who exercise between 6 a.m. and 8 a.m. have greater reductions in their belly fat and blood pressure, and they have stronger leg muscles, compared to those who work out in the early evening, researchers reported in 2022 in Frontiers in Physiology.
Burn more calories from fat: It's a fact that when you train on an empty stomach, a bigger ratio of energy that you use comes from your fat stores. So if two workouts burned the same amount of calories, the one that was done on an empty stomach might trigger faster weight loss.
Exercising in the morning or later in the day may enhance certain health benefits. But ultimately, the best time to exercise is whenever it's most convenient and enjoyable for you. That way, you'll be motivated to commit to a routine. Remember, every bit of movement you can fit into your day counts.
It is when the timing pattern of our workout becomes erratic that elicits a negative response to a positive stressor like exercise. If you're going to make the early morning workout your routine, then waking up at least an hour before training is your best bet for your body to adjust to a new the circadian rhythm.
The 70/30 rule in fitness suggests that 70% of your physical results (especially weight loss and body composition) come from nutrition and diet, while only 30% comes from exercise (gym workouts), emphasizing that what you eat is far more crucial for changing your physique than just working out, though both are important for overall health and muscle building. It highlights that while the gym breaks down muscles (the 30% effort), the kitchen (the 70%) provides the essential fuel, protein, and rest for them to repair and grow stronger.
Some cons of working out in the morning include:
The "5 5 5 30 rule" is a popular, simple morning workout routine popularized by Sahil Bloom, involving 5 push-ups, 5 squats, 5 lunges (per leg), and a 30-second plank done immediately after waking up to build energy, focus, and consistency by kickstarting metabolism and getting blood flowing with minimal time and no equipment. It's designed to overcome inertia, boost physical and mental readiness for the day, and serve as a foundation for better habits, making it ideal for beginners or those needing a quick start.
The 5-3-1 rule is a framework for social wellness, suggesting you connect with 5 different people weekly (varying circles), nurture 3 close relationships (inner circle), and get 1 hour of quality interaction daily, which can be fragmented; it's a simple method to maintain social health, alongside other interpretations like a fitness routine or trading strategy.
The "4 8 12 rule" isn't one single concept but refers to different fitness principles, most commonly a progressive overload strategy (4 sets, then 8, then 12 sets over weeks for muscle growth) or a hypertrophy rep range (4 sets of 8-12 reps), though it can also refer to a Virginia Satir idea about hugs (4 for survival, 8 for maintenance, 12 for growth) or a warm-up method (12 reps, then 8, then 4). In weightlifting, it typically means training in the 8-12 rep range for muscle growth or structuring workouts with increasing volume (sets) over time.
Avoid These 10 Workout Errors That Are Slowing You Down
Protein-rich drinks—like chocolate milk—can be an excellent choice after intense weight training or high muscle-stress activities like CrossFit. Protein helps muscles heal following exertion, and ingesting protein in liquid form gets those nutrients to your muscles with minimal delay in your digestive system.
However, exercising on an empty stomach will also cause you to lose lean muscle mass at the same time, which can hinder long-term weight loss. Exercising without eating first can cause dramatic shifts in your blood sugar, and when it drops quickly you can feel nauseous, light-headed or dizzy.
If you want to eat before exercising, choose a small snack or light meal.
What kills muscle gains most are poor recovery (lack of sleep, overtraining, high stress/cortisol), insufficient or poor-quality nutrition (not enough protein/carbs, excessive processed foods/sugar/alcohol), and inefficient training (too much cardio, bad form, focusing on isolation over compound lifts). Chronic stress elevates cortisol, which breaks down muscle, while inadequate protein, calories, and sleep directly impede repair and growth, making recovery paramount.
Doctors are cautious about intermittent fasting (IF) due to concerns about potential risks like increased cardiovascular death (especially with short eating windows like 8 hours), hormonal disruption (menstrual cycles), potential for disordered eating, nutrient deficiencies, and lack of long-term safety data, with some studies suggesting general calorie restriction might offer similar benefits, and highlighting IF isn't for everyone, including pregnant, growing, or certain ill individuals.