debilitation:
vigor,
health,
strength,
ability.
noun:
healthiness,
toughness,
health,
lustiness,
strength,
heftiness,
hardiness,
sturdiness,
Muscularity,
hardness,
fitness,
ruggedness,
energy,
soundness,
huskiness,
Brawniness,
wellness,
hardihood,
stoutness,
virility,
vitality,
robustness.