Friday, July 3, 2009

outdoor sport

Working indoors all day can make you feel drained and low on energy. You may start feeling slow, lack desire to get too much else after you leave the office. The next thing you know 10 pounds have appeared on your body out of nowhere. Fight these indoor blues... energize yourself with outdoor workouts.
Sunlight & Your Mood
One can easily become depressed when working indoors all day or staying in dark environments. Mood variations are sometimes related to how much sunlight you receive. Sunlight gives you the feeling of being awake and alert. Serotonin also gives you an awake feeling which elevates your mood. Melatonin, which is a sleep hormone, encourages a desire to rest and relax.
During the daytime the Serotonin production is at a high. However as we spend most of our days indoors in poorly lit environments the body begins to produce more melatonin giving you the indoor blues.
(Serotonin & Melatonin The name "serotonin" is something of a misnomer and reflects the circumstances of the compound's discovery.
It was initially identified as a vasoconstrictor substance in blood serum - hence "serotonin", a serum agent affecting vascular tone.
This agent was later chemically identified as 5-hydroxytryptamine (5-HT) and as the broad range of physiological roles were elucidated, 5-HT became the preferred name in the pharmacological field.
Melatonin, or 5-methoxy-N-acetyltryptamine, is a hormone produced by pinealocytes in the pineal gland, located in the brain, but also in the retina and GI tract. It is a derivative of the amino acid tryptophan.
Melatonin produced in the pineal gland acts as an endocrine hormone since it is released into the blood. On the other hand, melatonin produced by the retina and the GI tract is considered a paracrine hormone.)