How can I tone up?

Do leg lifts for your lower stomach - make sure you do it slow and flex the entire time. Do 3 sets every other day and about 10-20 reps each.

I’d do squats for your legs or leg presses because basically you just want to tone your legs up. You can also do lunges. But vary the lunges at different angles. Instead of going straight forward everytime, do a 45 degree angle to the side and straight out to your side will both work different muscle.

Again, do it slow and about 3-5 sets of 20 reps each. Add weights as necessary…2x a week.

Another good exercise is the step-up like stairs but a little higher…it’ll work your glutes very well if you add weight…do about 8-10 reps, 3-4 sets each. 2x a week

P.S. walking or stepping lunges are bad for your knees…

Yeah what you want is excercises that consist of lots of reps. Like instread of lifting a bunch of weight and doing 5 reps you go lower so its easy and do like 20 for each set. You can run or you can do some situps, pushups, nothing real straining. You should also stretch a lot too.