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).
Because rowing involves the entire body, it is much more taxing than other cardio. Therefore, if you want to last for the 30 to 50 minutes Concept2 recommends for weight loss, your maximum stroke rate should be no more than 20 to 30 strokes per minute.or vigorous rowing, those numbers are 255 and 377, respectively. Using the calories burned calculator available on ExRx.net, 30 minutes of extreme rowing would burn almost 50 more calories for someone at 125 pounds and more than 70 additional calories for someone at 185 pounds.