Re gillianne's comment, I would seriously consider replacing old workout DVDs with newer ones. Like medical information, exercise science also changes over time. Many 'old school' videos from the 80s and 90s (and I've owned many myself) contain exercises that have since then been replaced by ones that are more effective, efficient, and/or safer.
It's Finally Time to Retire These Technologies
|1/23/12 03:16 AM|