1. It may be a sign of a sleep disorder.
Rubbing your feet in bed may not be as harmless as it might seem at first sight. There is a condition called periodic limb disorder that affects your legs and you repetitively cramp or jerk them in your sleep. It can have a negative effect on you and lead to daytime sleepiness. If you rhythmically move and rub your legs in bed, and it happens quite often, this condition can be the reason for it.
2. Another medical condition could be a reason too.
There could be another rather serious reason for it. If you feel sensations in your legs when lying down and rubbing or moving them is the only way you can get relief — it could mean you have restless legs syndrome. It’s a neurological sensory disorder that won’t let you properly rest. To make sure you’re affected by it, you need to consult a doctor.
3. It is an unconscious way of self-soothing.
We try to “nest” and get comfy by rubbing our feet together. We create the effect of close touch on our skin by doing this and it makes us feel relaxed. Skin is known to be very sensitive to external stimuli, so it can be a powerful tool in our ability to unwind after a day full of stress.
4. It may just be a habit.
However, it could just become a normal way for us to fall asleep, not a medical condition or a physiological phenomenon. Many people actually rub their feet in bed without even noticing it. Even if at first it happened because of any of the above-mentioned reasons, it could have developed into a simple habit.