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This is much more relatable to me than the early risers - I’m curious: approximate how old are you?

Mid-30s. I realize this isn't a sustainable way to live, but I'm hoping to be retired by 40.

I recently watched this TED talk https://www.ted.com/talks/matt_walker_sleep_is_your_superpow... and was shocked how unsustainable such a way to live actually is.