I have great respect for Ryan and have a few of his books on my shelf, but please don't buy into this "wake up early" ideology as it's the furthest thing from science.

Sleep deficit and circadian misalignment are one of the biggest killers in today's society and are responsible for a lot of sickness and early death.

Only about 36% of the population is able to live up to what Ryan is proposing and remain healthy: the morning larks. For the rest of us, this advice is actually counter-productive and will make us sick – based on hundreds of studies.