How do you stay so thin?

I have always been a small in stature but since we have moved around alot, I keep getting the same question from newly found friends. How do you stay thin? The answer...I have kids. Here is an example. Yesterday I took our kids to a resort for lunch and to use their pool. Actually, there are four pools: the water slide pool (located up a few stairs), the hot pool, the little pool, and the big pool. My day went a little like this... Sam, my 2 year old, heads to the big pool, Chloe, she's 4, heads to the little pool. These are fairly close together so I pick a spot on the tiles that I can watch both. Sam leaves the big pool minutes later to play with sister in the little pool. Great! I think as I search for a chair next to the little pool. During the next three minutes I meet a woman, Peggy. She only has a fifteen year old sun who is busy with his ipod and ignoring his mother. We have the standard 3 minute conversation that every mom of a toddler has and then Sam leaves the little pool and heads up the stairs to the waterfall pool. I have to leave Chloe behind to follow Sam. Now I am walking back and forth between the two pools, slowly since the tiles are slippery, to check on the kids. on my second approach to the water slide pool I can see Sam holding onto the railing by the stairs on the opposite side making his "poop" face. I know what is coming so I jump into the pool and swim as fast as I can to retreive him...he is wearing a swim diaper but those things don't keep the poop from turning to mush and then leaking, trust me on this one. I walk past the little pool to check on Chloe and to let her know I will be next to the stroller by our table in the shade changing Sam. She barely hears me as I walk away carrying a 33 lb wiggling and wet toddler. I change Sam as fast as it is humanely possible and bring him back to the little pool. Chloe is still there enjoying the tiny waterfall in that pool. Sam only stays another couple of minutes before he is off to the water slide pool again. This time Sam decides to tackle the water slide so I jump in the pool and swim across the pool to catch him at the end. Then I swim with him to the stairs and pull myself out to go check on Chloe. She has moved to the big pool. Peggy calls out and says that she will look after Chloe. Bless her! I walk as fast as the ground permits to go back to Sam who is waiting impatiently at the top of the water slide for me to get into place at the bottom. I jump back into the water and swim across the pool just in time to catch him. We swim to the edge and I get out to peek at my daughter still playing happily with other kids in the shallow end of the big pool. Peggy waves. I wave back and re-enter the waterfall pool. This process lasts 5 HOURS. My kids only spent a half hour total in the same pool. I watch other parents sitting on their chairs watching their kids and hardly any of them seem as busy as I feel. Cue the feeling of doubt that creeps into my mind and always has me wondering if I am doing this whole mom thing right. The smiles on my kids faces quickly wash away those feelings. I also feel pride in my weary body when I look at their tired non sunburned faces. No one has any boo boo's today even though Sam fell 4 times on the slippery wet surfaces and all of those were easily fixed with a kiss to the effected area. I must be doing something right! At the end of the day we head to the restaurant where their father is waiting for us after playing a leisure round of golf. Cue irony.