What's the difference between two-man bobsled and four-man bobsled?
As is probably apparent, the names of these styles come from the number of athletes in the sled. For two-man, the sled is pushed and ridden by a driver and a brakeman. As for four-man, there's a driver, two athletes pushing, and a brakeman. Women's bobsled is always two-man, but mixed-gender crews have been allowed in four-man since the Sochi Games in 2014.
How much does a bobsled weigh?
There's no time to get into gravity right now, but basically the heavier the sled is the faster it'll go. To make this fair, there are minimums and maximums for the weight of the sled without and without a crew. Without the crew, the minimum weight for a sled is 375 pounds for two-man and 463 pounds for four-man. For women's bobsled (always two-man), the sled must weigh 364 pounds. With the crew, the maximum weight of a sled is 860 pounds for two-man, 1,389 pounds for four-man, and 717 pounds for women's bobsled.