Raf mastered the art of catnapping when he was a kid because it wasn't often that he'd be allowed to sleep for as long as he needed to at night. Mom would often be awake with him as early as 5am and bedtime was usually between 10pm-12am. Mom figured that if she wasn't tired, it probably wasn't that bad for Raf, either. More hours in a day meant more time to practice music and to rehearse answers to questions and conversations he'd potentially be met with during their various social events. The internet didn't exist back then...maybe she just didn't know that kids and teens require...so much more sleep.
Raf never complained [complaining never helped, and often made things worse for him]. To compensate, he just learned how to take advantage of quiet moments and steal quick winks of sleep when the opportunity arose...but never deep slumbers. If someone so much as breathed his name, he needed to be alert and on his feet again. So his naps were always very light.
At night, he was never a good sleeper, no matter how tired he may have been. It was hard to turn his brain off from processing the days events and nitpicking himself over the interactions and such that he could have done better...trying to decipher what a worrisome expression or glance might have meant, trying to recall details he might not have noticed that would come back to haunt him the next morning. A few hours of sleep, and he'd have to wake up and do it all again.
He got even less sleep in Juilliard, pulling countless all nighters with the help of amphetamines to get him through his recitals and course work. Mom wasn't there to push him anymore, but her criticisms and expectations persisted in his head--in his own voice.
And for several years after Juilliard, Raf's disordered sleep patterns persisted. He couldn't get a reasonable night's sleep without chemical assistance, and he still maintained his habit of opportunistic, light napping when an opportunity presented itself.
In fact, Raf's sleep habits didn't start to improve until Margie [and later, Tess] began crowding his bed at night. Maybe Raf is just a flock animal and requires the presence of other peacefully resting flock members to reassure him that he can sleep soundly and safely. So long as there is a Tess or Margie snug in his arms, he'll get a good night's sleep.