I don't care about my own body.

The second half of "I don't care about my body" can be "Who cares about you?"

"If you don't care about your body, who will care about you?" This sentence is usually used to remind people to pay attention to their health and cherish their bodies, because only they can directly feel the state and needs of their bodies. If you don't take good care of your health, it may lead to a decline in your physical condition and even lead to various diseases, which will affect your quality of life and happiness. Therefore, we should always pay attention to our physical condition, eat properly, exercise properly, maintain good work and rest habits and keep healthy.