Personal Business: HEALTH
TABLE: Tracking the Body's Cycles
1:00 A.M. Pregnant women are most likely to go into labor.
Lymphocytes (white blood cells) are at their peak.
2:00 A.M. Growth hormone levels are highest.
4:00 A.M. Asthma attacks are most likely.
6:00 A.M. Onset of menstruation is most likely.
Plasma insulin is lowest.
Blood pressure and heart rate begin to rise rapidly.
7:00 A.M. Symptoms of allergic rhinitis (hay fever) are worst.
8:00 A.M. Calories are burned most readily.
Risk for heart attack and stroke is highest.
Symptoms for rheumatoid arthritis are worst.
10:00 A.M. Gastrointestinal bleeding is most likely from ulcers.
NOON Level of hemoglobin in blood peaks.
1:00 P.M. Serum cholesterol peaks.
3:00 P.M. Grip strength, respiratory rate, and reflex
sensitivity highest; a good time for athletics.
4:00 P.M. Body temperature, pulse, and blood pressure peak.
6:00 P.M. Urinary flow is highest.
9:00 P.M. Pain threshold is lowest.
11:00 P.M. Skin is most reactive; allergic responses more likely.
DATA: BUSINESS WEEK