ache
ail
atrophy
attend
bandage
body
brawn
care
danger
decline
degenerate
exercise
fit
gripes
harm
heal
health
health care
healthy
human
inflame
inflammation
injury
knee
knee injury
leg
legs
man
manage
muscle
musculature
ordeal
pain
pang
person
physical
poignancy
risk
save
service
sinew
sinews
smart
sting
supervise
swell
training
treat
walk
weak