Are dua's without action accepted by Allah?

There is a hadith relating to the Prophet and a Bedouin. >One day Prophet Muhammad ( peace and blessings be upon him) noticed a Bedouin leaving his camel without tying it. He asked the Bedouin - Why don't you tie down your camel? The Bedouin answered - I put my trust in Allah. The Prophet ( peace and blessings be upon him) then said - Tie your camel first, then put your trust in Allah (Tirmidhi ) ---------- Does this mean it's the same for Dua's? If I make a dua to Allah and ask for example: > Please give me health. But don't bother taking action to exercise, and eat healthy nutritious foods. Is this a similar scenario as above? i.e. do everything you can first, and then put your trust in Allah? Or, is it enough to get healthy by eating badly, with zero exercise and just doing dua to become healthy?