Change in Sleep Habits
In most cases, exercise can help regulate our sleep cycle. Being active during the day can help us rest easier at night. If you're overtraining, the opposite may occur. Pushing your body too hard can cause insomnia or oversleeping. A recent study of 27 male triathletes found that those who were put in the overload training group slept for less time and less efficiently than those in the regular workout group. Their sleep habits returned to normal as their workouts tapered off.