Gene Stratton-Porter's Biography. American feministâ photographerâ one of Indiana's most famous female authors. Stratton-Porter's moralistic and romantic novels have been translated among others into Finnish and Swedish. By the time of her deathâ her books sales had topped ten million copies.
That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two energy shot drinks. Although caffeine use may be safe for adults, it's not a good idea for children. And adolescents should limit themselves to no more than 100 mg of caffeine a day.Even among adults, heavy caffeine use can cause unpleasant side effects. And caffeine may not be a good choice for people who are highly sensitive to its effects or who take certain medications.eavy daily caffeine use â more than 500 to 600 mg a day â may cause side effects such as: 1  Insomnia. 2  Nervousness. 3  Restlessness. 4  Irritability. 5  Stomach upset. 6  Fast heartbeat. 7  Muscle tremors.
In fact, higher doses are more likely to cause unwanted side effects. The more recently recommended caffeine dose for performance improvement is 1 to 3 mg caffeine per kg body weight (0.45-1.4 g per lb). For a 68 kg (150 pound) athlete, that equates to a range of about 70 to 210 mg of caffeine.o this at least one week before the competition to be completely free of withdrawal effects. Once you are off caffeine, resume a moderate intake of 1 to 3 mg caffeine per kg body weight (0.45-1.4 mg per pound) on the day of your competition.