The timing of a workout can influence sleep quality, particularly when exercise takes place close to bedtime. A sleep specialist has suggested that morning exercise may be preferable when possible, while evening workouts can still work for people who cannot exercise earlier.

The recommendation is not that everyone must stop exercising after a particular hour. Instead, people should pay attention to how their bodies respond to late-night workouts.

Exercise can increase alertness, body temperature and heart rate. For some people, intense physical activity shortly before bedtime may make it harder to wind down and fall asleep.

A sleep specialist recently suggested aiming for morning exercise when practical and, for those who prefer evening workouts, finishing them before around 7pm.

However, individual responses to exercise timing can differ. Some people may be able to exercise later without experiencing noticeable changes in their sleep, while others may find that late workouts repeatedly delay bedtime or reduce sleep quality.

The type and intensity of exercise may also matter. A demanding workout late at night could have a different effect from lighter activities such as walking, stretching or gentle yoga.

For people who notice a consistent connection between late exercise and poorer sleep, moving workouts earlier in the day may be worth considering.
Ultimately, there is no single workout time that works for everyone. Maintaining regular physical activity remains important, while adjusting the timing and intensity of exercise can help people balance fitness goals with healthy sleep.