Today I would like to share my thoughts on the ultimate upper body strength training implement. What do you think it is? Barbell? It is cool and effective, but it requires lots of additional equipment like plates, squat stands, and possibly a power rack and a bench, as well as it is not quite mobile. What’s else? Sandbag? While it definitely does the trick, you are limited to the size of your bag and the amount of filler you need. Kettlebell? Not really. Again, it is mobile only if you have a car, and it is definitely limited to the heaviest one you have (unless you know this).