Yes, but don't rush for success. We should do it step by step. You can use a catty first, and then add weight when you get used to it. Before practicing with the sand belt, you must warm up by jogging or other activities, otherwise untrained amateurs will be easily injured.

In fact, using sandbags to improve physical fitness such as jumping and speed is not very suitable for beginners. In-situ jumping and short-distance running are all effective exercise methods, but if you want to improve significantly, you must stick to it. Be sure to relax after every exercise, otherwise it will be difficult to improve once the training is over.

You have no training, so don't use 4 or 5 kilograms sandbags at first, which is more effective for increasing leg strength, but not very effective for improving jumping ability and speed, because loading will slow down your moving speed.

Sandbags are only auxiliary sports and cannot be completely relied on. We should also focus on running and jumping training. I am a middle school physical education teacher. You can contact me again for specific training methods.