Anyone claiming that you should wake up early is claiming bullshit and understand nothing about sleep.
If you interrupt your sleep, you'll be sleep deprived, period.
If you do it on a long period, you'll have health issues (increased risks of heart diseases and cancer, among others).
You can also go to bed early. It's not one sided. I find I don't sleep as well in the summer when it's light from 5am to 10pm, so I installed black-out shades in my bedroom--dark, quiet, cool. My wife calls it my tomb, but it works for me.
Anyone claiming that you should wake up early is claiming bullshit and understand nothing about sleep.
If you interrupt your sleep, you'll be sleep deprived, period.
If you do it on a long period, you'll have health issues (increased risks of heart diseases and cancer, among others).
DO. NOT. DO. THAT.
You can also go to bed early. It's not one sided. I find I don't sleep as well in the summer when it's light from 5am to 10pm, so I installed black-out shades in my bedroom--dark, quiet, cool. My wife calls it my tomb, but it works for me.
Read a bit more here, and even more in the book twitter.com/brianluidog/status/114...