I had all kinds of pains in my shoulders, ribs and back when I started this. I don't know how big your wife is, but I'm 5'4" and 115 pounds, and carrying 50+ pounds around on my shoulders did nasty things. My husband and I used to joke after every pool session that I had the bends because I had all this body pain . . . It gets better, but carrying that much weight ISN'T easy on your physiology.
For some people, learning to dive may be a cake walk. It wasn't for me. And I wasn't even sure I wanted to do it when I went into it. That's why I wrote my journal of my OW class, and why my friends encouraged me to publish it. But in the end, I got so hooked that my husband, who wanted me to do this, is bitterly regretting ever having gotten me started. Maybe it can be the same way for your wife, if she can find a motivation to get through the initial "Oh my God this is awful" stage.
For some people, learning to dive may be a cake walk. It wasn't for me. And I wasn't even sure I wanted to do it when I went into it. That's why I wrote my journal of my OW class, and why my friends encouraged me to publish it. But in the end, I got so hooked that my husband, who wanted me to do this, is bitterly regretting ever having gotten me started. Maybe it can be the same way for your wife, if she can find a motivation to get through the initial "Oh my God this is awful" stage.