Yes.
150pounds
they don't have to be they are normally because less weight makes them go faster
Jockeys have to be able to endure intense physical training. They focus on cardio and LIGHT weight training. They have to keep their weight down, and muscle weighs more than fat. Distance running, not speed. A lot of core work, and legs. They get an arm workout just from galloping the thoroughbreds. Also, some do yoga to keep their muscles stretched out for the races.
to keep warm
Jockeys - 2009 Upset It All Comes Down to This was released on: USA: 13 March 2009
Jockeys - 2009 It All Comes Down to This 1-12 was released on: USA: 13 March 2009
To keep the weight down.
dont eat alot
The Clerk of Scales is the official (under the Racing Secretary's Office) who "runs" the Jockeys Room, weighing the jockeys out before a race and reporting any discrepancies in their weight to the stewards. His job is to make certain the jockeys are at or under the legal weight for that race's (and their mount's) allowance. The Clerk of Scales also notes and reports any changes of jockeys or of silks, and provides the Paymaster of Purses with a list of riding fees due each jockey that day. This is also the official who can be seen in the Winner's Circle after the race, recording the weight of every rider (and his gear) after he or she dismounts, to make certain no "weight was dropped" after the jockey's pre-race weigh-in.
well it is best to only buy things you need not just to keep your bills down but to keep your weight down too.
Jockeys need to be small because that means that they are light weighted. They need to be light weighted so the horse doesn't have a lot of weight to take on. This makes the horse be able to run as fast as it can with being in control.