Nerve agents and substances causing injury to the skin and tissue are easily soluble in, and penetrate many different types of material, which renders decontamination more difficult. If chemical warfare (CW) agents have penetrated sufficiently deep, then toxic gases can be released from the material for long periods.
To be a jockey, there are no height limits, only weight limits. A rider can be of any height if they can still make weight, but it is still generally limited to fairly short individuals because of the limits on a person's body. Jockeys typically range from 5' to 5'7 in height. No need to lose any weight.
Jockey Training. Most jockeys begin their careers as early as age 14 or 15 working as a groom or exercise rider for horse trainers. You start at the bottom of the totem pole and are typically expected to show up for work by 6 a.m. or earlier, but the experience is invaluable in learning the ins and outs of the horse-racing business.