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).
During a hamstring strain, one or more of these muscles gets overloaded. The muscles might even start to tear. You're likely to get a hamstring strain during activities that involve a lot of running and jumping or sudden stopping and starting. Getting a hamstring strain is also more likely if: You don't warm up before exercising.