Cuddling is indeed the best form of reducing any form of stress from your brain.
It helps to release oxytocin and reduces cortisol levels in the body which eventually improves our heart health.
Cuddling helps to improve your sleep cycle as it gives a sense of comfort and safety.
When you cuddle with your partner, it helps to improve your relationship.
Cuddling on a regular basis helps in preventing colds and other viral diseases as well.