I've started working out at home with dumbbells but I always leave my ab workouts feeling like I haven't done much. How many of you do yours at home and what routine do you do? Heres my info: 23 years old 5'9" 150 pounds This is my usual routine: 3 sets of 30 reps of weighted (20 pound dumbbell) vertical leg crunches 3 sets of 30 reps bicycle crunches 3 sets of 1 minute long planking exercise (assume push up position but don't actually do the push up you just hold it) then occasionally I will do some side bends with a dumbbell. I work them enough that they start to fail towards the end and I can rarely perform the 3rd set of bicycle crunches without messing up my form because they are so tired. However a couple hours after doing this routine my abs feel fine and there is no soreness or fatigue or anything. I typically work them 3 times a week. I have developed some muscles and you can see my six pack if I haven't eaten much that day :laugh2: but I just don't feel like I'm working them enough, advice?