Ask HN: How do you artifically stress yourself?

I have realized lately that I set deadlines which are beyond possibility, set goals which I always miss.

My mindset earlier was if you aim higher you get more done but lately I am realizing that it is not always true and that has been the reason for stress. I am switching to setting more realistic deadlines and giving myself more slack.

Perhaps both the modes are important but useful depending on how stressed/confident you have been lately.

This made me think, how else do I stress myself out and how others artifically stress themselves out?