I've never taken a yoga class in Midlo, but at every other studio I've been to, unless specified otherwise in the description, the classes are meant to be modified to your level. You can take a break in child's pose at any time and often at harder parts, instructors will give you some options and if you're a beginner, you just take the easiest one. All that to say yoga is very friendly to beginners! And even if it seems like everyone else knows what they're doing, we love seeing newbies come so there's no judgement! Again, no recommendations for places in Midlothian but any decent studio should be welcoming, regardless of skill or fitness level.