That was not true.
I expected to have a long and good sleep on the real bed after 7 days sleeping bag life. But I didn’t know the jet lag is much stronger than the tiredness.
I woke up 4 in the morning so tried to sleep more. But eventually, I saw the sun rising and the clock in front of my bed showed correctly every hour. KiKi resisted a little longer than me but he also started to work at 7 in the morning.
So we became morning person even though we didn’t really want to be.