or if you have the cash for it, invest in a weight vest. I know Elite Fitness has them and they are pricy but I have a friend that has a 40 pound one and he loves it. You can adjust the weight from I think 2.5-40lbs.

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MONSTER: My Strength Endurance Journal, Part 2: The Strength Endurance Journal Returns <--NEW

BULKING: My 5X5 Journal

CUTTING: My CKD Max-OT Journal, My HST Cutting Journal