If you want to combine the two perfectly, you can make full use of this overtime. If you work overtime in the company, you have to stay in the company. Maybe you don't need to use a computer, you should think about some problems. Then at this time, you can choose to run up and down the stairs in the safe passage of the company, so that you can get a good exercise and fitness. At the same time, you are still thinking in this process, and the work to be completed allows you to successfully complete overtime.