Expecting your second set of twins? Here’s what it’s like having twins twice—from pregnancy and exhaustion to joy, grief, and everything in between. What are the chances of having twins twice? I used to joke that I’d be a “twins twice” person. I even told Natalie Diaz, the founder of Twiniversity, that I had a weird feeling before my first set of fraternal twins even turned one. Then January came around, and with it… two more heartbeats. Statistically, it makes sense… at least...