I awe at my ability to heal my body naturally and with ease.

Repair is metabolically expensive. Rebuilding tissue, mounting an immune response and clearing away the debris costs considerably more than sitting still ought to cost.

Which is why people recovering from things are flattened by two in the afternoon.

That exhaustion is not a sign of failing at it. It is the bill for work being done, and it arrives whether or not you approved the invoice.

Naturally does not mean free, then. It means paid for out of a budget you cannot see, by a system that started the job without asking and does not stop for weekends.