Fuck air walker, only squats are the way to go. You should do abs even if you have some fat left, you're gonna make 'em bigger and first two rows are still gonna become visible, you'll get thickness.
Haha, I know that feeling. But you're yet to see why everyone hates that day, when you starting doing squats with a lot of weights, it's gonna kill you

I also hate when my heart starts beating after it, it's like doing cardio literally.