One thing is for sure having chemo is shit, I did not realize that it stopped you doing so However there is a good news cancer story about, hopefully this will put a smile on your face http://www.bbc.co.uk/news/29210991
Because your body is retaining water to help repair your muscles. Also, yes it does happen to other people too, and no, there is no point preventing it as it is just water and not 'real' weight gain. And you can help by drinking plenty of water the next day to help flush it all out. I would not bother with the strict dieting part; just eat as normal.
A chap called Fred Lorz (a bricklayer who trained at night) achieved 4th in the Boston Marathon and decided to enter the Olympics (1904 I think) he succumbed to the heat after 9 miles and jumped into a car that broke down. He went to the start to collect his clothes and was quickly marshaled to the podium to collect his gold medal! The Presidents daughter presented the laurel wreath before it was realised what had happened Fred said he went through with it for a joke; the officials were not impressed. A lifetime ban was imposed before the other competitors pointed out that he waved at them as he passed in the car, his story was accepted
Meanwhile the eventual winner Tom Hicks was having a bad day and went bang at 19 miles. His 'handler' a dodgy Doctor gave him a milligram of Strychnine in egg whites after another mile Tom (who was exhausted and dehydrated) collapsed again and was given another milligram this time in Brandy! He crossed the line barely conscious and nearly died. When Fred's game was realised Tom was brought to the award ceremony still barely aware of what was happening! Toms time was 3h 28m
His 'Dr' said that Tom could have been beaten by three of the other competitors. They could have beaten Tom with, "proper care" pointing out that, "medication is of much benefit to athletes on the road" before saying that, "warm sponges are better than cold ones" !!!!!
From "The Olympics' 50 Craziest Stories" by Les Woodland