Bloom, 35, expertly incorporated Flynn, who turns one year old on January 6, into his exercise routine with two male friends, reported Radar online.
With his wife, Flynn's mom Miranda Kerr, nowhere in sight, Bloom toted Flynn on his back in a baby carrier while holding a water bottle in one hand and the leash of his dog, a black Saluki mix named Sidi, in the other.
It was previously reported that Bloom has no problem giving his Australian model wife a break and being a mother to Flynn.
The actor flashed his wide smile as he walked along with an unfazed Flynn bouncing in his Bjorn behind his dad. And it was sure to be a great workout, as Flynn is a big boy who weighed in at 9 pounds, 12 ounces at birth.
