Your body relies on food to provide it with the it needs to grow, to repair itslef, and to supply you with energy.

Glucose

That is the answer to you question

Your body relies on food to provide it with the nutrients i needs to grow, to repair itself, and to supply you with energy.

There is no best way to cut yourself without hurting yourself. to heal yourself, seek a trusted adult or friend. cutting yourself will only hurt more. hope this answers your question : )