Healthy living involves more than physical health, it also includes emotional or mental health. The following are some ways people can support their mental health and well-being. Tips: Get enough sleep daily; the CDC recommends the following by age group (naps inclusive); 12-18 hours from birth to 2 months, 14-15 hours from 3-11 months of age, 12-18 hours for 1-3 years of age, 11-13 hours for 3-5 years of age, 10-11 hours for 5-10 years of age, eight and a half to nine and a half hours for 10-17 years of age and those 18 and above need seven to nine hours of sleep. Elderly people need about seven to nine hours but do not sleep as deeply and may awaken at night or wake early, so naps (like kids need) allow them to accumulate the total of seven to nine hours of sleep. Take a walk and reflect on what you see and hear at least several times per week. Try something new and often (eat a new food, try a different route to work, go to a new museum display). Do some mind exercises (read, do a puzzle occasionally during the week). Try to focus on a process intensely and complete a segment of it over one to several hours, then take a break and do something relaxing (walk, exercise, short nap). Plan to spend some time talking with other people about different subjects. Try to make some leisure time to do some things that interest you every week (hobby, sport). Learn ways to say "no" when something occurs that you do not want to do or be involved with. Have fun (go on a trip with someone you love, go shopping, go fishing; do not let vacation time slip away). Let yourself be pleased with your achievements, both big and small (develop contentment). Have a network of friends; those with strong social support systems lead healthier lives. Seek help and advice early if you feel depressed, have suicidal thoughts, or consider harming yourself or others. People taking medicine for mental-health problems should not stop taking these medications, no matter how "well" they feel, until they have discussed their situation with their prescribing doctor(s). Avoidance behavior is another key to healthy living. Below are described some of the major items to avoid if a person is seeking a healthy lifestyle.