21.   As they lived on liquid formulas, their body composition and metabolic rates were carefully measured.

22.   At the same time, subjects become infertile and their thyroid hormone levels sink, slowing the metabolic rate.

23.   A pound of muscle, at rest, adds only about seven calories a day to your existing metabolic rate, he said.

24.   A regular program of aerobic exercise can raise the metabolic rate and thus increase the number of calories used, both during the activity and between exercise sessions.

25.   Adding light weights to her exercise routine will help preserve and build muscle tissue, resulting in a revved-up metabolic rate.

26.   But animals like the predatory tunicate survive in these low oxygen zones by maintaining a low metabolic rate and extracting oxygen efficiently.

27.   By slowing the animals down, he said, the genes might also lower their metabolic rate and decrease the damage that would normally build up over time.

28.   Children are more at risk than adults, because they have a higher metabolic rate and their organs are still developing.

29.   Dr. Mark Merrick, an athletic trainer at Ohio State University, said his basic science studies suggested that thermal ultrasound hastened recovery by increasing the metabolic rate.

30.   Even small declines in metabolic rate add up, in terms of added poundage, because the balance between food intake and energy expenditure is so exquisitely sensitive.