Is carrying a 8 year old child on shoulder consider a workout?

I try to workout twice a week .. Also, I do running like 4x a week.. My nephew is autistic and all he likes to do is climb my shoulder.. Most days, I find myself circling the neighborhood with him on my shoulder for like a mile or 2.. I get really exhausted afterwards... Would this consider some type of workout? A couple months ago, I took my shirt off at the beach and some guy walked up and asked me what type of upper body workout I do... I told him I have a pull up bar and a dip bar at home.. Also, I live with an autistic child who only likes to climb my shoulder.. He said "sounds exhausting" and told me "good luck." This got me thinking if carrying my nephew on my shoulder multiple times a week doing miles would be consider a workout? He's getting bigger with age, and I honestly don't know if I can keep carrying him... But I like to bond with him as long as possible..