One of my students Sam mentioned he is returning to Colorado for 2 weeks, he may not make it to the gym and he’s keen to keep up his BJJ training, having been getting close to daily sessions in. Along with gifting him a pair of forearm forklifts for his isometric exercises, which are probably the best way to improve strength for Brazilian Jiu Jitsu and MMA, I recommended he take a look at Michael Heinz of SBG New Braunfels excellent solo drill material. He covers 1) The Bridge 2) The Shrimp 3) The Reverse Shrimp 4) Rolling 5) Reverse Plank 6) The Lazy Sit Up 7) Posture
Michael has extensive experience in Yoga and Meditation as well as being a Brazilian Jiu Jitsu Black Belt under John Frankl, a 5th degree BJJ Black Belt. I fully recommend taking a class with Michael if you want to train BJJ in New Braunfels.