A participant in this year's Single Handed TransPac Race from SF to Hanalei Bay, Kauai went on a forced diet. He had prepackaged frozen meals packed in dry ice. The race turned out to be the slowest ever as they experienced several long periods of calm for the first half of the trip. Don't know if it was because of that or he didn't properly test for longevity but his primary food thawed and spoiled. He was on short rations of nuts and trail mix for much of the race and had no food for the last two days. Lucky for him the tradewinds held or would have gotten real skinny.