To diagnose a problem with the port, try using a different battery and cord for a while. Damaged Power Cord. The power cord is a wire inside a plastic sheath, and the wire can break with or without damage to the sheath. If the power goes on and off as the cord is moved or bent, the wire is likely broken.
You can work out if you're sore. Don't exercise the same muscle groups that are hurting. Do legs one day and exercise your upper body the next. By doing so, you'll still be able to get exercise and allow your lower body to recover and rebuild.
If you feel muscle soreness immediately after a workout, it probably means that you didn't stretch enough. So stretch out your muscles to get some relief. If you worked out yesterday and your muscles are sore, try using a heating pad or a hot shower to loosen up your muscles.