When the weather gets warmer, I feel weak all over, especially my legs.

This should be what Chinese medicine calls "spring sleep". Basically everyone will have this phenomenon in spring, but yours looks more prominent. It's not a disease, it's just a reaction of human physiological function to the weather.

Look at your situation, it seems that there is no ideal plan for life, and there is no psychological factor such as passion for life.

Buy some nutrients for tonifying kidney and blood, of course, it is best to eat and treat it yourself, such as stewed angelica with bamboo, stewed peanuts with pig's trotters, stewed red dates with pig's trotters, Beiqi, Lycium barbarum and so on. I'm afraid I have to buy Wuji Baifeng pills to eat.

More importantly, you should adjust your attitude towards life, stimulate your interest and curiosity in life and ignite your passion for life.