The "rub Ranking" Secret To A Good Night's Sleep. S Night’s Sleep Mind

Rub英[rʌb]美[rʌb] v.擦；磨；搓；（使）相互摩擦；摩擦（尤指引起疼痛或损害）涂。 n.擦；抹；搓；揉；问题；困难。 [例句]rub the surface smooth.

Secrets to a good night’s sleep