Spending time with abandoned puppies or logging hours at the soup kitchen is always a good idea, right? Not necessarily. Overzealous selfless behavior could be a sign of “pathological altruism.” People with this condition feel an impulsive need to devote themselves to others, even if others don’t want any help. Before swooping in to aid a buddy, ask if they really want the help, or if they’d rather go it alone.

Do it Today: When trying to help out, consider another person’s real needs — even if they don’t match up with your own.

Double Trouble:

Do romantic partners make it harder to stick with a healthy routine?

Lend a Hand:

Volunteering can provide a mental-health boost.