If you go to the gym two or three times at first, you haven't got into the habit yet. Now we may have done it once the day before and forgotten it when we go again the day after tomorrow. Fitness effect and muscle memory are not very good, just like people who just started learning. If you don't work hard at first, you may feel that you can't keep up and lose confidence in yourself later.
Of course, people who have just started fitness can't do too high-intensity fitness training. They should start with the simplest training slowly, and then start to increase the amount every day. The effect will get better step by step. You may feel tired at first, so you must get through it at this time, get familiar with the rhythm of daily fitness, and get used to the feeling of sweating every day. I think, in a few days, you will find that fitness is really good.
Also, when you go back, remember to do more relaxation exercises and massage the sore parts every day. You can also treat your stomach well and cheer for yourself tomorrow. Finally, everything is important. This sentence may be said to be bad, but it is an eternal truth, and so is fitness. So many successful people we have seen have practiced for a long time to get that effect.