Exercise routine for building stronger, more muscular legs and abdominals. You should combine the two days in this routine with 'push' and 'pull' days (see for example my routines: JR's Carve-a-chest and Build-a-back) for an overall, balanced, whole-body training scheme. Specific arms training can be done on another day but is secondary in importance to legs, back chest and shoulders. Choose heavier weights for the lower-rep sets so that each set challenges you sufficiently to stimulate growth. Eat and rest sufficiently so you can progressively add more weight to the exercises every week or two.