adjective
testing one’s abilities; demanding.
challenging and rewarding employment
demanding,testing,taxing,exacting,exigent,searching,stretching,exciting,stimulating,inspiring,energizing,inspirational,difficult,tough,hard,heavy,stiff,formidable,onerous,arduous,laborious,burdensome,strenuous,gruelling
adjective
fresh and invigorating.
the bracing sea air
invigorating,refreshing,stimulating,energizing,exhilarating,enlivening,reviving,restorative,rejuvenating,revitalizing,vitalizing,rousing,fortifying,strengthening,healthy,healthful,health-giving,salubrious,beneficial,tonic,salutary,fresh,brisk,crisp,cool,keen,pick-me-up,inspiriting
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