If you are feeling particularly creative, you can incorporate more of your singing exercises into the breathing exercises. For example, on the exhales sing notes, trill your lips, do an "open mouth hum" (also known as singing "hungggggg") or practice a section of an aria. Have fun!
The first exercise is the Double Leg Stretch. To make it easier, extend your legs straight up to the sky. To make it more challenging, extend your legs to 70 degrees, 30 degrees, or even two inches above the ground!
The second exercise is the Roll Up. No not the fruit roll up! The abdominal roll up! Make sure if the full roll up is too challenging that you watch the second video for the HALF roll up!:)
The last breathing exercise is called (morbidly) The Saw. If you need to make it a little easier, you can bend your knees OR sit on a slightly elevated object such as a pillow, block, or folded mat. If you are feeling extremely bendy and flexible, try increasing the distance between your legs a little, but make sure you always keep BOTH HIPS anchored to the floor!
Enjoy breathing and increasing your abdominal strength!