For the body to recover
For the body to recover properly is also a way to help run faster.
Rest is important for runners’ efforts to recover and prevent injuries. During the rest day muscles build themselves and repair.
The brain can benefit from rest after intense activities, improving emotional health. Runners may find that they run faster when they take at least one day off each week.
Weight adjustment
Runners who are overweight can improve their speed by losing weight. A gentle body is an advantage that helps runners run faster.