Cashing in a coupon

So, for father's day, I got a coupon from my family for some underwear. Yesterday, I cashed in that coupon on some sports underwear. See, they know I have really been struggling with staying cool and hydrated, and have been wearing the right type of material, but not the right colors. I bought some UnderArmour underwear bottoms, a white UA longsleeved shirt for the heat, and a white UA sleeveless jersey for running in. I topped this all off with a UA visor which should let the heat vent through my cranium, while keeping the sweat off of my glasses. All said, this was a pretty penny for underwear, but I am hoping this will help me to get in condition enough to allow me to continue training in the heat, and making progress.
Today was my 2000M open-water swim at lucky's lake. www.luckyslakeswim.com it was a beautiful day to swim, and I was excited to swim because it would be my first time crossing twice in a day. I felt appropriately tired from the swim and my arms especially are weary. I think that the best way to improve now on my swim is for me to start working on posture in the water, and my kick. My kick should bring up my legs to make me more aerodynamic in the water, and posture will help me to be flat like a board, not saggy and droopy in the middle like a 2x4 that has been left in the rain. This should help in the bike by sucking my gut up, and on the run by relieving some pressure on my lower back. Main way to do all of this is to start seriously concentrating on core strength. If I am right, that will help every aspect of training.