Why Morning Exercise Feels More Difficult
It’s not solely a matter of being a night owl or an early bird. Research shows that most people have greater strength and speed later in the day.
Even if you manage to get dressed and head to the gym in the morning, your legs may feel heavy, and weights that were manageable in the afternoon can suddenly seem much harder.
The Role of Circadian Rhythm
Your body operates according to a natural 24-hour cycle called the circadian rhythm, which regulates hormones, body temperature, and alertness levels.
This rhythm is controlled by the brain but also affected by factors like sunlight, which can make morning workouts especially challenging during winter months.
Exercise Performance Patterns
Studies show exercise performance tends to peak between 4 and 7 p.m., meaning most people are at their strongest, fastest, and most powerful in the late afternoon and early evening.
Why Morning Workouts Are Harder
- Your core body temperature hits its lowest point around 5 a.m.
- As your body temperature rises throughout the day, your muscles contract more efficiently.
Your legs are heavy and the weight you lifted only a couple of days ago – in the afternoon – feels almost impossible.
Understanding these biological rhythms can help you adapt your exercise routine if you need to work out in the morning.
Summary
Morning exercise feels tougher because our bodies naturally perform better later in the day, as regulated by the circadian rhythm and rising body temperature.
Author's summary: Morning workouts challenge the body’s natural rhythms, as strength and muscle efficiency improve throughout the day, peaking in the late afternoon.