When is the best time to do cardio? Many fitness enthusiasts debate whether early morning workouts are better than evening sessions, but the answer is often It depends on the situation.” This decision is not just a matter of personal preference. We also take into account the science of how different body rhythms, energy levels, and time of day affect performance and results. Let’s take a closer look at the pros and cons of morning and evening cardio to find what’s best for your goals and lifestyle.
The science behind aerobic exercise timing
Your body operates based on circadian rhythms. Circadian rhythms are natural internal processes that regulate sleep-wake cycles and other physiological processes over a 24-hour period. This rhythm influences a variety of bodily functions, including core body temperature, metabolism, and hormone production, all of which can affect the performance of the heart at different times of the day. Here’s how timing affects your workouts.
Morning cardio: advantages and disadvantages
Benefits of morning cardio:
- Promote fat burning: Morning aerobic exercise, especially on an empty stomach, can promote fat burning. (1). This is because glycogen levels are low in the morning, prompting your body to use stored fat for energy. While “fasted cardio” isn’t a silver bullet for everyone, some research suggests it may be effective for those focused on fat loss.
- Improved consistency: Finishing your workout in the morning will give you a sense of accomplishment and help you start your day with more energy. Many people find it easier to maintain consistency when they do their workouts early because there’s less chance of unexpected interruptions.
- Improving mental health: Exercising in the morning releases endorphins, also known as the “feel-good” hormones, which lift your mood. A morning cardio session can improve your focus, improve your mood, and lower stress levels throughout the day.
Cons of morning cardio:
- decrease in body temperature: Your body temperature usually drops in the morning, which can affect muscle elasticity and increase your risk of injury. It can also mean that your muscles and joints feel stiffer and less flexible.
- Performance limitations: If you’re not a morning person, you may feel sluggish or have low energy levels early in your workout. For those aiming to achieve peak cardio fitness, these factors can hinder output.
Aerobic exercise at night: advantages and disadvantages
Evening cardio pro:
- higher energy level: Your body has more time to warm up throughout the day and often has more energy stores after meals. Many people experience peak physical performance in the afternoon or evening. This means you may have more energy and endurance for aerobic exercise.
- Increased strength and speed: Research shows that muscle strength, power, and cardiovascular efficiency often peak in the late afternoon and early evening. This makes evening cardio sessions especially effective for those focused on endurance or high-intensity performance.
- stress relief: For many people, evening training provides a mental break from a busy day. Doing aerobic exercise in the evening releases stress and tension, promoting better relaxation and sleep.
Cons of night aerobic exercise:
- May disrupt sleep: For some people, strenuous exercise at night can disrupt sleep patterns, especially if done close to bedtime. Increased heart rate and adrenaline can make you fall asleep less easily and affect the quality of your sleep.
- Increased risk of distraction: Evening training can be easily interrupted. After a full day at work, family and social obligations can take priority and it can be difficult to maintain a consistent evening cardio routine.
Which time of day works best for you?
Choosing between morning and evening cardio ultimately depends on your personal goals, schedule, and how your body feels at different times. Here’s a quick breakdown:
- morning aerobic exercise May be best suited for:
- The focus is on fat burning.
- You like to start your day with a boost of energy.
- It requires a certain amount of time that is unlikely to be interrupted.
- night aerobic exercise May be best suited for:
- Performance is better in the afternoon or evening.
- You focus on strength and endurance.
- You can create a schedule that allows you to work out late without sacrificing sleep.
Practical tips for timing your cardio
- listen to your body: Pay attention to how you feel during and after your workout. If you feel tired during your morning session, try moving your workout to later in the day or vice versa.
- consider nutrition: If you work out in the morning, especially if you’re fasting, be sure to refuel and recover with a nutritious meal after your workout. When training in the evening, eat a light but balanced meal before training to avoid feeling sluggish.
- stick to a routine: No matter what time you choose, consistency is key to getting results. Choose a time that fits your goals, schedule, and natural energy patterns.
conclusion
Morning and evening aerobic exercise both have distinct benefits. There’s no universal “best” time to do aerobic exercise, as the right timing depends on your personal preferences, lifestyle, and goals. For best results, choose a time of day that you enjoy and stick to long-term, whether it’s a brisk run at sunrise or a wind-down jog in the evening. With the right approach, doing both morning and evening cardio can effectively help you reach your fitness goals.