The MIT Media Lab Affective Computing group is looking for 50 healthy adults to participate in a study of links between sleep, circadian rhythm, and well-being. Participants will wear a smartwatch for 14 days, respond to surveys, and take an at-home dim-light melatonin onset (DLMO) saliva test. Participants must be 18-60 years old, use an Android phone, and reside in Greater Boston. You will receive $195 by check upon completion. Sign up to participate here.