sure, some sit ups and push ups everyday will do you good. Though I would suggest a balanced training for overall body, not just biceps curls. I know a flexed biceps is the first thing you would notice, like Roek's avatar, if someone is well muscled or not, but for instance, you can't have a truly strong, well conditioned arm if you don't work your shoulder(deltoids), triceps, and forearms at the same time. Then well conditioned arm won't look as good if your pecs and lats are in a poor state. Try to pay attention to the overall effect, and put some variety in your routine everyday, and do not work the same muscle groups every day, which will just exhaust the muscles and prevent from an effective gain.