This is very unusual for any one to have blood in the urine. Menstruation can cause a positive urine test. If you are not menstruating, then it means there is a source of bleeding within your bladder or ureter or kidney. This requires verification with additional urinalyses and then follow up testing if still positive. In brief: Blood in urine.
The FISA (International Rowing Federation) minimum weight for men's crew coxswains is 55 kilograms (121.25 pounds) in racing uniform. For Women's and Mixed Crews, the weight minimum is 50 kilograms (110.23 pounds) in racing uniform.he minimum weights for a cox depend on the gender and age of the crew they are coxing. If the crew is racing at Junior 15 or younger (J15), then the minimum weight of the cox is 45 kg (99.21 lbs).
If you are currently overweight and can safely lose 28 lbs, then this is feasible and will likely take between 4 and 6 months. First you'll need to assess how many calories you burn during an interval of exercise on a rowing machine. Most machines will tell you how many calories you've burned during a session. One pound of fat is about 3,500 calories. If you burn 100 calories in 10 minutes of rowing, and you row for 350 minutes a week, then you'll lose 1 pound a week just from rowing. First you should make sure it is healthy for someone of your sex, height, and body type to lose that much weight.