This move had a decisive impact on the shaping of a national job safety and health program in 1967, as the Departments of Labor and HEW promoted their competing proposals. The Bureau of the Budget accepted the Department of Labor's recommendations.
After I walk for about a minute, my legs are so tired... Q. After I walk for about a minute, my legs are so tired it feels like I've walked for miles. My doctor says it's because of poor circulation in my legs and ordered a medication, pentoxifylline, that caused dizziness, so I'm afraid to take it.
What Causes Muscle Soreness After Exercise? Delayed onset muscle soreness is thought to be a result of microscopic tearing of the muscle fibers. The amount of tearing (and soreness) depends on how hard and how long you exercise and what type of exercise you do.