Leaf spot first appears in rainy or humid weather as the plants are growing. They look like small brown spots with a water-soaked margin surrounded by a yellow halo usually on the upper halves of the iris leaves.
Two, caffeine enhances the sensation and contractility of the bladder. Another way caffeine can affect prostate health is through its ability to irritate the bladder because it is a theoxanthine, a family of drugs that includes theobromine (found in chocolate) and theophylline (found in tea). Theophylline also stimulates and irritates the bladder.
Caffeine stimulates receptors located in cells within your heart to increase your heart rate. Effects of this stimulation speed up your blood flow because of an increase in heart rate, as well as an increase in blood sugar, urine production and body temperature.