Jessica Biel does not like kissing scenes

The A-Team actress - who locks lips with Bradley Cooper in the forthcoming action movie - insists there is nothing romantic about getting close to her hunky co-stars because an on-screen smooch is so technical.

She explained: "It's not at all hot. There's a bazillion people around, everyone's in your face fixing things. It's very technical and precise. Your face has to be in the right place and the camera has to be at the right angle. So it's not romantic."

The 28-year-old beauty also hates getting in shape for her film roles because she has to completely overhaul her usual lifestyle.

"It is so challenging, I did it for Stealth and Blade and it is not fun, so I felt for everybody as they were eating their chicken and vegetables and brown rice. Your whole world is different and it gets into your head a little bit."

Gruelling trek

Although she hates exercise, Jessica - who is dating Justin Timberlake - recently had to get to her physical peak when she undertook a gruelling trek up Mount Kilimanjaro in Africa for charity.

Although she completed the challenge, the actress was in tears by the time she reached the top of the mountain.

She said: "Right before we made it to Stella Point, which is right around 19,000 feet and you come to this plateau and you feel you've made it - then you realise you have 330 more feet to go and you find it feels impossible.

"As we made the hourlong walk to the peak I was in tears. I only had one walking stick left at that point and I was a complete and utter mess. I couldn't move forward at that point, but I did."