Related by context. Frequent words. (Click for all words.) 47 muscles 47 muscle 41 aching joints 41 tendons 40 hips knees 40 muscle tissue 40 backaches 39 lactic acid 39 fatty tissue 38 skeletal muscles 37 fluid retention 37 repetitive motions 37 muscle contractions 37 calf muscles 37 cardio vascular 36 relieves stress 36 muscle fibers 36 Muscles 36 sweat glands 36 flexing 36 adrenal glands 36 inflammation 35 strenuous exercise 35 blood vessels 35 muscular endurance 35 aching muscles 35 arteries 35 profuse sweating 35 bone 35 joints 35 atrophied 35 fat 35 synovial fluid 34 oxygen uptake 34 contractility 34 scar tissue 34 connective tissue 34 sore muscles 34 Aerobic exercise 34 stiffening 34 knees hips 34 metabolism 34 glands 34 artery blockage 34 stiffens 34 protein shakes 34 metabolic 34 nerve endings 34 facial muscles 34 barbells 34 thymus gland 33 swelling 33 vasodilation 33 hip joints 33 arthritic 33 constricting 33 belly fat 33 intestines 33 glutes 33 appendages 33 atrophy 33 stiffness 32 flexed 32 edema 32 Flexing 32 inner thighs 32 postural 32 leucine 32 tissues 32 elastin 32 cramping 32 constricts 32 internal organs 32 thighs 32 abdominal exercises 32 Arteries 32 gland 32 subcutaneous fat 32 narrowed arteries 32 connective tissues 31 Achilles tendons 31 deadens 31 elasticity 31 glandular 31 lower extremities 31 abs 31 muscle soreness 31 resting metabolic 31 discomfort 31 thickening 31 muscle atrophy 31 sebaceous glands 31 capillaries 31 bones 31 skin elasticity 31 contractile 31 skeletal muscle 31 arthritis 30 constriction 30 bone density 30 biceps