It is done by standing or sitting in a bucket or bath of icy water. One writer advised: "don't overdo it."[19] Wearing rubberized "dive booties" on the feet (to protect toes) as well as rubber briefs to warm the midsection have been recommended. Champion weightlifter Karyn Marshall, who won the world women's weightlifting championship in 1987,[20] described what it was like to take an ice bath after a day of competition at the CrossFit Games in 2011 in Los Angeles: