adjective

showing or involving great activity or vitality.

moderately energetic exercise

active,lively,dynamic,zestful,spirited,animated,vital,vibrant,sparkling,bouncy,bubbly,perky,bright and breezy,frisky,sprightly,tireless,indefatigable,enthusiastic,zealous,fiery,passionate,peppy,zippy,sparky,full of get-up-and-go,full of vim and vigour,full of beans,full of the joys of spring,bright-eyed and bushy-tailed,go-go,peart,vigorous,strenuous,brisk,rigorous,hard,arduous,demanding,taxing,tough,forceful,aggressive,high-powered,all-out,determined,impassioned,emphatic,bold,pushing,driving,effective,effectual,powerful,potent,intense,intensive,hard-hitting,pulling no punches,pushy,punchy,gutsy,in-your-face,go-ahead,high-octane,feisty