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.
Muscles need probably 48 hours of rest but soreness can last a little longer, especially if your new to working out. After workout and even days after make sure to stretch, yoga is great for healing your sore muscles as well as making these muscles more flexible! Go easy if you are new, First Day At The Gym Workout.