Soreness and weakness after waking up may be due to the following reasons: First, cold and flu at night, cold and flu at night especially viral infections, there will be generalized soreness, weakness, nasal congestion, sore throat, etc., you need to drink more water, you can also take oral medication to treat. Second, the first day of activity is relatively large, some people like to go to bed before the big physical exercise, such as walking a long way or exercise equipment, the night sleep time is not enough, did not remove the body fatigue, the next morning will get up on the body aches and pains, weakness. Third, due to stay up late, sleep late, sleep time is relatively short, will also cause the next morning up body aches, weakness.