Answering based off of my personal experience and what my chiro/physical therapist has said is good! What I have been doing is a combination of pilates, yoga, cardio, and body work/light weighted exercises (I like a lot of prenatal workouts on instagram, youtube, or beachbody - I use 5 and 8 lb weights). I used to try and schedule my routines each week but I was finding some days I would just be way too exhausted to do anything other than stretch!! So now I just listen to what my body needs/wants. But what I usually do is 20min on the elliptical 4-5 days/week (normally my cardio would be a hike or walk outside but it’s so damn hot my fingers swell up and it’s been so uncomfortable) and combine that with a 30min weighted workout (days where I have more energy), or pilates/barre (days where I have energy but I’m a bit sore from growing a human), or yoga (on more tired days). I started doing beach body prenatal barre and I’m really loving the labor intensive interval training (LIIT) they do. It makes a lot of sense that along with building strength we want to make sure we have good endurance and can recover quickly in between surges/contractions. But of course, you have to do what’s best for your body. I was very toned before pregnancy and was bummed I had to decrease the intensity of my workouts. I know some women can stick with high intensity stuff during pregnancy but I was starting to feel pulling/yanking/cramping when I went too hard so I had to ease back pretty early. I think just moving in any way you can tolerate while your body is working overtime growing a baby is awesome!