Akademik

underexercise
I. \\| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ˌ ̷ ̷\ intransitive verb
Etymology: under (I) + exercise, v.
: to exercise too little

overeating and underexercising

II. noun
Etymology: under (III) + exercise, n.
: inadequate amount or frequency of exercise

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v.i., underexercised, underexercising.

Useful english dictionary. 2012.