Stuff’s resident triathlete Sally Hudson puts the Under Armour’s new Machina 2 connected shoes through their paces. Because I am a triathlete, I run a lot. Running shoes are therefore an important part of my training equipment. So what more could a sports gadget-junky, triathlete want than an intelligent running shoe? That’s what the UA Hovr Machina 2 promises to be and, I’m happy to report back, actually does. When it comes to running, even for elite athletes, you can always do with more assistance. The shoes have embedded sensors that you link to a smartphone and UA’s Map My Run…