Related by context. Frequent words. (Click for all words.) 38 muscle 26 flex 26 aerobic 25 atrophy 24 flexing 24 muscular 24 arthritis 23 muscle tissue 23 muscles 23 Muscle 22 arthritic 22 neuromuscular 21 bone density 21 cardio 21 joints 21 muscle fibers 20 connective tissue 20 aerobic exercise 20 flexed 20 skeletal muscle 20 flexes 19 bone 19 calf muscles 19 musculature 19 muscle wasting 18 sinew 18 glutes 18 fat 18 hamstrings 18 nerve 17 anti inflammatory 17 edema 17 muscle soreness 17 fluid retention 17 inflammation 16 creatine 16 Muscles 16 abdominal 15 stiffness 15 lifting weights 15 vocal chords 15 muscle spasms 15 vocal cords 15 lactic acid 15 strenuous exercise 14 triceps 14 lower extremity 14 lower extremities 14 metabolism 14 exertion 14 biceps 14 glycogen 14 soft tissue 13 tendons 13 elasticity 13 stamina 13 scar tissue 13 collagen 13 abdominal muscles 13 abs 13 weight 13 abdominals 12 thigh muscle 12 belly fat 12 flexion 12 fatty tissue 12 cartilage 11 nerve endings 11 stomach 11 spinal 11 spasm 11 abdominal muscle 11 pecs 11 spinal cord 10 quadriceps 10 endurance 10 biomechanical 10 thighs 10 arm 10 facial muscles 10 spine 10 tendon 9 bicep 9 brain 9 bones 9 ribcage 9 brawn 8 brains 8 sciatic nerve 8 calf muscle 7 rib cage 7 quadriceps muscle 7 physique 6 rotator cuff 6 strength 5 ligaments 5 ligament 5 pectoral muscle 4 knee cartilage 3 body 2 abdominal wall