what is good to strenghthen my muscles?!

Workouts: Lift weights, Run, Push-ups, Pull-ups, Squats, Gym machines...

But if you mean chemically, protein foods are good for building muscles such as eggs, milk, nuts.

But if you just eat and don't exercise, you won't get any stronger, just fatter.

do u want all over toning and strength training

go to a gym and do cardio workout and use free weights but go thru it with a trainer first

do a range of exercises,running,weights,rowing machines try a lot of different exercises to see what u like doing