We all know that John Abraham is a fitness freak. Now, he's turned into a fitness guru too. Johnny boy is giving health and diet tips to Tusshar Kapoor, co-star of his upcoming flick.

According to a rather fat birdie from the sets, he has advised Tusshki not to indulge in unhealthy snacks and biscuits as they are poison for the body.

Besides, the hunky actor has reduced his intake of water as it shows unrequired result in his scenes.

So he's replaced the essential liquid with suitable substitutes like oranges and sweet limes. When life gives you lemons, make lemonade as they say!