un instructeur tonique


Senior Member
British English
Heard the following on info 20h Fr2 this evening (07/02/15) talking about 'boot camps', séances de sport/entrainment ultra intenses : '...gentillement crié dessus par un instructeur assez tonic (ou tonique?). What is the main idea conveyed when describing a person as 'tonic' in this context? Fit, well-built, strong, tense, indefatigable, domineering, loud; any or all of these meanings?
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