âThereâs called free circulating DNA, the fetus, some of its DNA gets into the maternal blood and we can actually detect that DNA -- the accuracy of these tests are about 99 percent,â Dr. Abdullah said, âWe can do this test around 10 weeks, so itâs very early in the pregnancy.â.
Daytona International Speedway is 2.5 miles (4 km) long and a 500-mile race requires 200 laps to complete. However, the race is considered official after half its distance (100 laps or 250 miles (400 km)) has been completed.
Forget Runs Less Than 30 Minutesâ A 10 to 15 minute run means youâre likely spending more time showering and changing clothes, so for a real benefit, pick up the mileage and put down the soap. Try to get to the point where the least you run is 30 minutes. That way, youâll have a solid sustained cardio foundation to work from on race dayâthe extra mileage pays off because your body will be used to sustained running. Anything below 30 minutes will likely be a waste of time. [pagebreak]