[header] How to relax after a long day [title] Take a hot shower or bath. [step] Warm water helps relax your muscles and increase circulation. It therefore offers some of the same benefits as getting a massage or exercising can, but is low-cost and won't risk ramping you up for a couple hours like intense exercise can. 
Light some candles, play relaxing music and soak in the tub for at least ten minutes. [substeps] The bath is a great time to do some meditation or practice mindfulness.