There are several reasons why you may sleep better after a massage:

Reduced muscle tension: Massage therapy can help reduce muscle tension and relieve pain, which can make it easier to fall asleep.

Increased relaxation: Massage therapy can also help promote relaxation by reducing levels of stress hormones like cortisol and increasing levels of feel-good hormones like serotonin and dopamine. This can create a state of deep relaxation, making it easier to fall asleep.

Improved circulation: Massage therapy can help improve blood flow and circulation, which can help promote relaxation and improve the quality of sleep.

Reduced anxiety: Massage therapy can also help reduce feelings of anxiety and promote a sense of calm, which can help you fall asleep more easily and sleep more deeply.

Overall, massage therapy can be a beneficial tool for improving sleep quality by reducing muscle tension, promoting relaxation, improving circulation, and reducing anxiety.