Possibly - but in general 2 half sets of an exercise routine (cardio or strength) doesn't usually have exactly the same benefits as a full set. I don't know ab

Possibly - but in general 2 half sets of an exercise routine (cardio or strength) doesn't usually have exactly the same benefits as a full set. I don't know about brisk walking, but if you run at a steady pace for 22 minutes, your heart rate will be higher in the second half than the first. If you split a weight training set in half - I believe it is more likely to increase the bulk and strength of your muscles but won't be as good at building stamina.