The study also found that girls and young women were more likely than boys and young men to have coenzyme Q10 deficiencies. Boys and young men were more likely to have vitamin D deficiency. Patients with chronic migraines were more likely to have coenzyme Q10 and riboflavin deficiencies than patients with episodic migraines, the study found.
ThisOldHouse.com estimates it took two people five hours and six bags ($150-$180) of material to resurface a 9'x27' driveway and a 3'x18' walkway (about 300 square feet). Renting a pressure washer to clean the existing concrete before resurfacing can add $40-$75 to the total DIY costs.
1 Demolishing and removing the concrete from a typical two car driveway will likely cost $1500 to $2500 and up. 2  The size of the driveway is the major determining factor in the cost.3  Also, if the driveway was completed with reinforced concrete, then it's more difficult to remove and the cost to remove may go up. A modest patio or sidewalk (i.e. 200 sq. ft.) may be removed by a contractor with heavy equipment in some parts of the country for $400 - $600, though the cost can be significantly more if the concrete cannot be recycled.