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).
These are extremely common injuries among runners. Muscle tears can occur suddenly â most commonly in explosive sports such as sprinting or football â or accumulate slowly over time. The hamstrings, groin and calf muscles are most at risk from muscle tears.