Introduction to Cnidaria Jellyfish, corals, and other stingers: Cnidarians are incredibly diverse in form, as evidenced by colonial siphonophores, massive medusae and corals, feathery hydroids, and box jellies with complex eyes. Yet, these diverse animals are all armed with stinging cells called nematocysts.
In fact, regular physical activity can help you prevent or manage a wide range of health problems and concerns, including stroke, metabolic syndrome, type 2 diabetes, depression, certain types of cancer, arthritis and falls.o. 1: Exercise controls weight. Exercise can help prevent excess weight gain or help maintain weight loss. When you engage in physical activity, you burn calories. The more intense the activity, the more calories you burn.
Croatian researchers studied middle aged chronic low back patients who did not have accompanying leg pain (sciatica) to find out whether water or land based exercises was more successful in relieving pain. They found that both types of exercise did the job nicely and also helped decrease physical disability.