Is anyone familiar with the Insanity program....I have back issues. Mostly due to weak muscles/core. I need to strengthen these muscles. I have no real issues any longer (used to have a Vitamin D deficiency that went undiagnosed for 2 years that gave me MAJOR muscle spasm/joint issues...very painful. Led me to gain weight from being sedentary outside my job) Fast forward to now....weak core=sore back.
Can I still do this program being that i have no disk/vertebrae issues? I need something to make me fit and strong!