Obviously you need to ensure you know your constraints and your doctor/physician must advise you as to your limitations. ATHLIV however is for everyone. The key to ATHLIV is to get you to move consistently, preferably every day!
You are in control of the speed you move, and the weights you use. Always focus on your form and technique as a priority, and cease any exercise if it causes pain.
Also if you have any injuries we recommend avoiding exercises that are likely to impact or aggravate your injury. Always seek appropriate professional advice before participating, or if you are unsure.