Word for expressing pushing one's health limit as if overdrafting a bank account?

Question

Suppose Tim is working very hard and constantly pushing his limit, at the cost of his health, by often staying up late and forgetting to take breaks. This is similar to overdrafting one's bank account, but here he is "overdrafting" his health "account". So I wonder if there is a verb or an expression that closely means "overdrafting" one's health "account"?

Thanks!

Answer 1

There's the idiom burning the candle at both ends, which one website¹ defines as:

To exhaust oneself or one's resources by leading a hectic or extravagant life.

It doesn't necessarily imply health risks, but could certainly be used in that context.

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¹thefreedictionary.com

Answer 2

Over-exerting is an option.

By working hard, he is over-exerting himself.

Other words or idioms:

• to toil (struggle hard)
• to slog away
• work one's fingers to the bone
• work like a Trojan
• work one's socks off
• put oneself through the mill
• keep one's nose to the grindstone

Answer 3

A similar phrase is on borrowed time.

Answer 4

Bankrupting your health seems to be a phrase sometimes used when people continue to practice bad health habits that eventually catch up with them. I think it would mean that you are aware of the habits, but continue to do them.

Answer 5

On can refer to "overtaxing his/her strength/health." Money is not the only thing that can be overtaxed.

Another word is to overexert.