1 person 20s Adults only Calm Caucasians Close up Concentrate Concentrating Concern Contemplate Dark hair Doubtful Dreamy Exhausted Fatigue Females Head and shoulders Head shots Horizontal Individual Long hair One person Pensive People Person Photographs Pictures Portraits Relaxed Serious Sleepy Solo Square Stock photo Studio Thinking Thoughtful Tired Tranquility Twenties Twenty years old Uncertain Unsure Vulnerable Weary Woman Women Worried Young adults Youth