Pood was once a common Russian unit of weight, equal to forty funt (фунт), or Russian pounds. That makes one pood about 16 kilograms, roughly 35 pounds. It was part of the Imperial system and officially abolished in 1924, but the word never fully disappeared.
The word also survives in everyday speech. The expression сто пудов, “a hundred poods,” means “for sure” or “definitely.” So while the pood is gone from official scales, it still has a place in both Russian culture and modern fitness.
Today you’ll still see it in kettlebell training. A one-pood kettlebell is about 16 kilograms, one and a half poods is 24 kilograms, and two poods is 32 kilograms. Crossfit often uses these measurements as well.