1。 When doing dumbbell exercise, you don't adjust your breath correctly and hold your breath, which makes your head blood pressure rise sharply, causing local swelling or pain. When doing resistance exercise, the muscles should exhale when exerting force on the heart contraction and inhale when returning to centrifugal contraction.

2。 When carrying out resistance exercise, the teeth are bitten too tightly, which leads to excessive force on the small skull muscles such as masseter, causing swelling or pain. Just rest for two days, but still pay attention to the way of exercise.