alicia vikander. she worked hard to get lara croft cut.uggle was real. >> this is truth telling time. what was tougher, the work outs or the diet that had to go with it? >> i must say the diet for sure. i have actually enjoy the work out quite a lot. filming i had three eggs and fruit after the work out. then at 10:00 two filets of fish a bowl of rice and similar at 1:00 and 4:00 and 7:00. >> that's not real life. >> i'm back to my real food. >> what's the first thing you went for after? >> each sunday you had cheating. it was pizza or pasta. it was like i woke up on sundays and was like it's pizza day. >> alicia put on 12 pounds of muscle and did most of her own stunts. she got the most competitive with her husband michael fassbender. >> you or michael which could do the most pull ups? >> me. >> i love it. did you watch angelina's movies before? >> yes. i have saw the films when they cameout. angelina jolie made her into the icon she is. >> the fate of humanity is in your hands. >> one big perk of being the star, she got to meet prince wi

alicia vikander is showing her own body confidence in the new tomb raider. some intense workouts to get lara croft cut, and i was with the trainer who made it happen. >> i wanted her to be a strong, physical girl. so, i started to gain muscle and gain strength. 12 hours a day. i mean, this is 45 min yous in the morning. >> how much muscle did alicia put on? >> i think she gained 12 pounds? >> really? >> yeah. >> and was that all muscle? >> yeah. >> i know what you're thinking. at 5'5" and 117 pounds, alicia's a tiny woman to begin with. but check out this before and after. how did she get those abs and tomb raider fit? >> i started three months before shoot to work with magnus. this film is about her becoming the action hero that we know her to be. >> tomb raider actually tells the origin story of angelina jolie's lara croft. she did weight training to prepare for the role. her end result was this. and you can see alicia's results, too. >> and let's start. all the way down. >> so, i tried out the mag nut method at croft boot camp. lots of intervals to burn o