Why do we need to sleep for hours why not minutes and why does coffe let us stay!
Question:
Why do we need to sleep for hours why not minutes and why does coffe let us stay awake even more?
well if you answer this great hope you can
Answers:
To answer the last part first, coffee contains caffine which is a stimulant that wakes the mind temporarilly. There are obviously other drinks that can do this, most notably redbull which contain other stimulants too.
As for needing sleep, the body can go without sleep for perhaps several days at a time, although you'll feel pretty awful afterwards. It's to let the body regenerate itself and depending on the exertion you've had that day will determine just how much rest you'd probably need. Some days you may find that just a couple of hours is ok to wake and feel refreshed, whereas you may need far more the next day.
I also believe it's possible to train your body to not need as much sleep through diet and daily habits. Margaret Thatcher apparently used to be able to run the UK with just 3 or 4 hours sleep a night, although what her secret was is unclear.