Before I can even bring my thumb up to my mouth, I can hear my body growing larger already. I feel some confusion, but look down and see that I grew an extra 500 feet from that one deep breath! I was amazed and so were the tiny people. I grow just by inhaling air now! It was incredibly exciting, as now I felt so much stronger! Well, not that I wasn't already super powerful but anyway! I wonder if I can grow by exhaling too. I let out a content sigh, as I was rubbing my massive pecs, and indeed, I grow another 500 feet, up to 3500 feet total. I grin widely, and flex for the tiny people, as they cheer for me and my massiveness. I decide to reward their cheers and love of me by growing bigger and bigger and BIGGER! So big, that the whole country will be able to see just how huge I am! I start taking a long deep breath, growing at a steady rate that was also increasing exponentially, just as my puffs from before were. Inhale, exhale, inhale, exhale, this went on for quite a while. Eventually, I had to stop, as I now towered over the country of Japan, my shadow casting over the whole country and some of the nearby countries. My muscles made half as wide as I was tall. I flex my big bulging biceps, creating an even larger shadow, and I could hear the tiny people from down below, cheering for my incredible size and power. But I knew both they and myself wanted more. WAAAAY more! And who was I to deny that sort of thing for them! I start to take my deepest longest breath, to really get the growth in, and start exploding in size. Soon I was the size of the US, then the size of North America, then the size of Asia, growing and growing and growing, all the way until I manage to reach a size where I could hold the whole world in my hand. I smile down at it, feeling the love and affection of every human towards my massive form. Now, what else to do at this size? I could grow more, that's a lot of fun! I could also try and help humans explore space. Easier to do when you've got an ally who's the size of a planet! Hmm, decisions, decisions.