A better word for "relaxing" because it emphasizes the fullness of the feeling of relaxation.

Very relaxing, restful

To be relaxed and just chill

Having an easygoing and mellow nature.

The one thing you shouldnt say to women/girls.

To chill out, calm down and take a break.

A prescription drug that has two primary affects. The ability to induce coma like slumber all the while allowing bowel movement.