At the first light of dawn, Leon awoke on time due to his regular biological clock.
Ever since he embarked on the path of cultivating Magic Power and Martial Arts, which granted him a knight's body far surpassing ordinary men, his need for sleep had significantly decreased.
Unless it was after that kind of Magic Power training that drained all his energy, he never again experienced the need to sleep ten hours a night as he had in his previous life.
Nowadays, with over eight hours of ample rest time each day, Leon spent three to four of those hours lying in bed practicing the Lorelette meditation taught in the Magic Guidebook, which involved controlling his mental state and adjusting the activity of the Magic Element circulation.
In reality, he only needed four hours of true sleep each night to fully recover his strength.
Of course, recently, sleeping less wasn't always just because of "meditation"...