"These studies have shown that time in
nature — as long as people feel safe — is an antidote for
stress: It can lower blood pressure and stress hormone levels, reduce nervous
system arousal, enhance immune system function, increase self-esteem,
reduce anxiety, and improve mood. Attention Deficit Disorder and
aggression lessen in natural environments, which also help
speed the rate of healing. In a recent study, psychiatric unit
researchers found that being in nature reduced feelings of isolation,
promoted calm, and lifted mood among patients."