1. Take a deep breath: lie on the bed, close your eyes, take a few deep breaths slowly and relax.

2. Stretching: Sit up straight, straighten your legs, then slowly bend your knees, stay as close to your chest as possible, hold for a few seconds, and then slowly relax. Repeat this action several times.

3. Abdominal muscle contraction: Lie on your back on the bed, put your hands behind your head, then the abdominal muscles contract, lift your abdomen, and then slowly put it down. Repeat this action several times.

4. Push-ups: If physical conditions permit, you can try to do some simple push-ups to exercise your chest muscles and arm muscles.

5. Yoga: Doing some simple yoga postures in bed, such as mountain posture and tree posture, helps to relax body and mind and promote blood circulation.

It should be noted that these exercises should be carried out in good health to avoid overwork or injury. If you have any discomfort or questions, it is recommended to consult a doctor or professional coach.