Depression lowers the spirits and drowns the eyes in sorrow, though tears aren’t the only reason why depressed people sometimes can’t see straight. Depression also caves in the chest, slumps the shoulders, and inhibits full breathing, usually forcing unhappy people to try to catch their breath by frequent sighing. It is sometimes said that depression brings you down to sighs (my apology to those readers who get depressed by bad puns).
On a much more serious note, depression can be a temporary passing experience or a deeply disturbing condition that may lead to suicide. Except in cases of minor depressive states, professional attention is generally recommended to help a person go through this emotional experience in a conscious manner.