Fitness during pregnancy is very important to keep healthy and improve the overall health level of pregnant women. However, because everyone's situation is different, it is recommended to consult a doctor or obstetrician before carrying out any new sports.

During pregnancy, appropriate fitness exercises include the following:

1. Walking: Walking is a simple and effective exercise method, which can help strengthen the cardiopulmonary function and exert slight pressure on joints and muscles.

2. Swimming: Swimming is a low-impact exercise, which can relieve the discomfort during pregnancy and reduce the pressure on the back and legs.

3. Yoga: Yoga during pregnancy helps to improve flexibility, balance and posture, while relaxing body and mind and reducing stress.

4. Water exercise: Participating in water exercise courses or aerobic exercise for pregnant women can provide good support, reduce weight and reduce stress and discomfort.

5. Fitness ball training: Using fitness balls to do some gentle exercises, such as pelvic tilt and abdominal muscle contraction, will help strengthen the core muscles.

6. Relaxation training: including deep breathing, meditation and physical relaxation exercises can help reduce stress, improve sleep and promote inner peace. Before taking any form of exercise, please consult a doctor or obstetrician to ensure that the activity you choose is suitable for your personal situation. They will give more specific advice according to your health and pregnancy stage.