i do alot of outside walking lunges,tire throws overhead,pushing the sled in parking lot,i tie the rope to a truck tire and try to pull it to me in under a certain amount of time,the weathers getting cold now so i stay inside unless its over 50 degrees,then i go outside. that type of training keeps a person using the muscles in the body that help them function way better in areas like gardening,construction work,alot or sporting activities ect, and helps keep them in great shape cardio wise to boot. give an example,a guy in my gym who regurely benches 450 fairly easily came outside and had a smirk on his face like it was easy what we where doing,make a long story short he tried it and almost had to get taken away in ambulence cause he couldnt catch his breath,luckily he started breathing better and his heart rate came down to a safe number.he walked away looking like an extra for the movie (night of the living dead)