The new program does, but hell man, a toddler who doesn't sleep through the night (ever... No family help, either) and who demands 100% attention when he's not at daycare is a massive, massive hit to your free time/motivation/energy/stress. He's wonderful but I'm absolutely fucking miserable right now.
Echoing others here: Yeah, don't be hard on yourself right now. When they get a bit older, you'll get healthier again. It's okay to slide back. The phrase 'relapse is part of recovery' comes to mind. Just focus on the kiddo for now, and you'll get time and energy back sooner than later. This happened to me too, and I managed to get back to a healthier body when we got done with teething. It's different for every kid, but you'll get there, don't worry.
I've got two toddlers and still manage to get outside for a run everyday. Used the Bob stroller when they were younger, now they ride bikes and I jog with them. When my son wouldn't sleep through the night for his first year (pre-walking), I'd set him in a play pen and run on the treadmill nearby.
Hang in there! And focus on the fun times. I'm assuming you're already tried many things, but if you haven't talked to your pediatrician, he might be able to help. Melatonin helped one of our foster kids fall asleep, but yeah, it didn't help him sleep all the way through the night. Good luck!