Like some exercises (7)
I believe the answer is:
aerobic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">like some exercises</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aerobic that I've seen before include "Exercises to enhance respiratory efficiency" , "Like exercise that aids the intake of oxygen" , "Exercise that enhances circulation" , "needing oxygen" , "(Of exercises) related to increasing oxygen in blood" .)