The main source of energy for tropical cyclones is the warm oceans in the tropical regions. To initiate a tropical cyclone the sea-surface temperature generally needs to be above 26.5Â°C.However, existing cyclones often persist as they move over cooler waters.eproduced with permission from BoM. The main source of energy for tropical cyclones is the warm oceans in the tropical regions. To initiate a tropical cyclone the sea-surface temperature generally needs to be above 26.5Â°C. However, existing cyclones often persist as they move over cooler waters.
Oolong tea contains caffeine. Caffeine works by stimulating the central nervous system (CNS), heart, and muscles. Oolong tea also contains theophylline and theobromine, which are chemicals similar to caffeine. Too much oolong tea, more than five cups per day, can cause side effects because of the caffeine.
1 Preventing ovarian cancer. 2  Women who regularly drink tea, including black tea, green tea, or oolong tea, appear to have a significantly lower risk of developing ovarian cancer. 3  One study found that drinking 2 or more cups of tea daily seems to cut ovarian cancer risk by almost half.olong tea is partially fermented, black tea is fully fermented, and green tea is unfermented. Oolong tea is used to sharpen thinking skills and improve mental alertness. It is also used to prevent cancer, tooth decay, osteoporosis, and heart disease.