He had filled his bottle with water from the big bowl.
Once his bottle was full of big bowl water, he drunk some of it.
Immediately, he felt a tingle in his toes, and he felt himself grow a small bit in size.
"Wow." Richard Reed said. "That water's very fizzy, but at least it's suitable for drinking, and it's sugar free."
He hardly noticed that his tracksuit was a little tighter than normal.
Of course, He had failed to take into account that the effects of the fountain’s water had no effect on clothing.
Without a second thought, he put his bottle in his jogging backpack, and resumed his jog.
He jogged through the forest, not even realizing he seemed a little larger.
BUT, since Richard Reed had filled up his bottle from the growing bowl of the Fountain of Size, it meant that every time he stopped for a drink, he would grow!