Worst: Protein Bars
Why would you risk buying 40 bars of protein bars that you’ve never tried before? Not to mention that Costco offers their protein bars for a dollar per piece, but if you buy a bulk of Pure Protein bars on Amazon, you buy them for less than $0.90 per piece!
Worst: Whole Grains
Whole grains contain oil just like nuts and seeds. These oils make whole grains go bad quickly, so it is not advisable for you to stock up on these. Just buy what you think is enough and what you think you will be able to consume instantly.