Greetings fellow nerds! I had been weightlifting 2-3 days a week until I badly sprained one of the myriad number of lower back muscles right above my sacrum while using horrible form during RDLs. Since then I discovered the beauty and importance of the core and my entire life has changed... I have reached another turning point in my exercise life as I have started to incorporate lower body weight lifting back into my routine. My current splits are push muscles/pull muscles/cardio/core training/leg muscles. However I am lacking consistency and structure in how to go about what. Additionally, my core day consists of mostly core tightening exercises like planks, v-sits and other holds. My core "strengthening" exercises like sit-ups, leg lifts, back extensions have been scattered throughout the ends of the various other split days, without much organization. I don't really have an end goal in fitness. When people ask me I simply tell them I want to maximize and reach my complete physical potential. I've come to understand that my body is geared more towards fast twitch muscles and explosive movements rather than endurance based workouts/exercises. I would like to lose body fat only as far as it will assist and improve my physical function. My question to you other nerds is how do I set up my splits to maximize the gains from each respective workout? I try to stuff my cardio and core days in between lifting days to minimize the continuous stress on my core and muscles in general. I can post my workouts if that info would be essential to any suggestion. I guess an overall theme of this post is how do I properly incorporate core training into an existing weight regimen? I've heard different things from different trainers about being able to tear your abs up every day due to their resiliency but I definitely notice soreness and weakness after certain ab workouts. Additionally, I'm also concerned about spacing the core workouts/exercises away from the leg lifting days, as I can't imagine how you can perform exercises like squats and weighted lunges with compromised core energy. I am also confused as to how endurance and non-endurance based cardio training affects the leg muscles and their performance in relation to anaerobic training. ***As a final note, every opinion I've put in here is my pure speculation/experience and I am open to trying anything. Thanks!