Marked by a regular rhythm
A rhythmic thumping echoed from the floor above.
I detected his rhythmic breathing within minutes.
I heard rhythmic breathing, signifying normal sleep.
Rhyn rested back on the boulder and closed his eyes to the rhythmic sounds of waves and Gabriel trying to kill the practice dummy.
Dessalles slept propped up on four pillows and his Roman nose emitted sounds of rhythmic snoring.