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.
Give each one a try and see what works for you. If an exercise is painful, don't do it. Glute Bridges. These strengthen your glutes and hamstrings while opening your hips and strengthening your core. Lie on your back with your knees bent and your feet flat on the floor hip-distance apart. Keep your feet and knees parallel throughout the exercise.