F frederick New member Dec 19, 2010 #1 Im thinking about substituting every second week of each phase while doing p90x classic routine for a week at the gym lifting heavier weights. (still keeping week 4 as my recovery week)
Im thinking about substituting every second week of each phase while doing p90x classic routine for a week at the gym lifting heavier weights. (still keeping week 4 as my recovery week)
