This question must be bothering you if you have been getting your workout from CrossFit. Then let me tell you that pood originated in Russia along with kettlebells and is a unit of measurement for kettlebells in Russia. Pood is a unit of equal to 40 funts (Russian Pound)
Now let's convert pood in kilograms and pounds.
One pood is approximately 16.38 kilos and a kilogram is 2.2 pounds, so one pood is 36.11 pounds. Heavy ha!