1. Walking or jogging: This is an easy-to-learn and low-cost exercise mode, as long as a pair of suitable running shoes is enough. You can choose to do it indoors or outdoors. Walking or jogging for 30 minutes to 1 hour every day can improve cardiopulmonary function and consume body fat.

2. Yoga: Yoga is a low-intensity exercise. Through various postures, enhance the flexibility of core muscles and muscles, relieve body and mind, and make people more harmonious. You can do it in your own home, just need a yoga mat and some teaching videos to support it.

3. Self-weight training: Self-weight training is a way to exercise muscles without using fitness equipment. For example, squats, push-ups, flat support and other training can strengthen muscles and burn calories. You only need your body and some teaching videos or books to start practicing.

4. Skipping rope: Skipping rope is a high-intensity cardiopulmonary exercise, which can consume a lot of calories and enhance cardiopulmonary function. You only need one rope skipping, both indoors and outdoors.

In short, there are many ways to lose weight at low cost, and you can choose the exercise mode that suits you according to your preferences and physical condition. Before starting these sports, it is best to get professional advice and guidance.