Who remembers doing these? I still do them. You grab two 55lb dumbells and walk for about 150 feet as fast as you can. Three sets and you will know that you have done something. For those who don't know they are called farmers walks because diary farmers often loaded their 5 gallon stainless steel milk cans and walked with one in each hand to the truck. The milk trucks drove from farm to farm picking up milk and paying cash for it. If the milk was not in a milk can they would not accept it. I would say the can plus milk is 60lbs. Try them sometimes.They are kind of like deadlifts in that you feel it all over. Traps get hit hard, and so does grip strength.