Try to give your ears — and whole body — a treat by listening to soundscapes, like birds chirping, water ebbing and flowing at the beach, or wind rustling the branches of trees. Those three sounds are thought to create a mental connection with freshness, a concept that's so popular in the UK that the BBC broadcasts 90 seconds of birdsong a day. Birdsong, in particular, is so similar to human music that it promotes happy emotions. "We should think about soundscapes as a medicine," Joshua Smyth, a biobehavioral psychologist at Pennsylvania State University, says in The Nature Fix. "Do it 20 minutes a day as a lifetime approach, or you can do it as an acute stress intervention."