Energy balance also has to do with whatâs going on in your cells. When youâre in a positive energy balance (more in than out) and when youâre in a negative energy balance (more out than in), everything from your metabolism, to your hormonal balance, to your mood is impacted.
Muscle injuries are very common in both professional and recreational athletes. They typically occur in muscles that cross two joints, during explosive activities such as sprinting, and when the athlete is suddenly increasing their exercise regimen (i.e., training camp).
Next, start off slow ... get the body used to a slow jog, then gâ¦radually build up speed which also increases endurance. In no time at all you will be at the sprint speed you so desire. also the reason some people might be faster at running is because they had been more active.