I am in a serious dilemma. I've been diagnosed with ADHD as a child and as an adult. My doctor really wants to put me on Adderall or Ritalin or some other stimulant medication due to deterioration in my life *quality*. <br /><br />I'm really hesitant in taking these types of meds due to how it will affect my training. I think these meds make your HR go up. <br /><br />So - what if I do decide to take these meds? Do I need to RETEST my Lactate Threshold Heart Rate and Training Zones or should I use the typical training zones I'm using right now (via Friel's Training Bible). I'd really like to do my base training right this year. <br /><br />Any advice will help!!!<br /><br />Thanks,<br /><br />OP