Our body schedule and is up to the circadian rhythm, so-called the internal clocks. This rhythm shows not only the phases of sleep and wakefulness but also affect our ability to work, desires and so on.
Why sometimes do you feel such a breakdown and cannot work productively? And why in other time do you have so much energy, generate crazy ideas, and your colleagues cannot understand what kind of doping you are? Smart psychological articles suggest that you are just a choleric. But this happens, because of ignoring your biological clock.
Follow your body schedule:
4.00-5.00 a.m.
At this time the body is preparing to wake up. But getting up so early is not the best idea.

6.00 a.m.
A 6 o’clock in the morning the production of the hormone melatonin decreases. Melatonin is the sleep-wake hormone, and its level in the blood is the highest at night. In the morning the most active hormone is cortisol (a hormone of vivacity and activity). Breathing becomes frequent, hemoglobin and sugar increase. Night owls body produced cortisol only at 7 o'clock. But the larks' hormone activity is produced at 5 a.m.
9.00 a.m
What are we doing at this time? We are at work or on the way to work. But at this time the most active is a sex hormone. People at 9 a.m. usually want sex.
10.00 a.m
This time is a peak of mental activity. 10 a.m. is a time to solve problems and implement new ideas.
2.30 p.m
This is the best time of movements coordination.
3.30 p.m
It is the best time for the long-term memory work.
5.00-6.00 p.m
It's time for sports. The blood pressure and the body temperature rise at 7 or 8 p.m. So it is harmful to our heart to train after 6 p.m.
7.00-8.00 p.m
Our body is in tonus. People in this time quickly react and remember. So reading a book should be useful.
10.00 p.m
Melatonin starts working. The body is prepared to go to bed.
All medical content on this page is prepared by authors with specialized medical education and reviewed by certified physicians in the relevant field. Medical review by Fahad Mawlood, Medical Editor & Data Scientist.
Last updated: October 18, 2023.
- Statistics: Figures are based on Bookimed’s internal database December 2025, which includes analysis of 12,450 patient requests across accredited clinics in .
- Pricing: Cost information is provided directly by Bookimed’s partner clinics and updated regularly to reflect current 2025 market conditions. Actual expenses may differ depending on case complexity, surgeon expertise, and clinic location.
- Clinical Data: Treatment outcomes and patient satisfaction figures are collected from Bookimed’s verified clinic database and supported by data from peer-reviewed medical sources such as PubMed, The Lancet, JAMA, and NEJM (2023–2025).
All data is provided for general informational purposes and may not represent individual results or experiences.


