Paul di Resta has challenged Force India to score points consistently in 2013

Paul di Resta has challenged Force India to score points consistently in 2013 and move up to the next level.

The Scottish driver has worked hard on his fitness during the winter and feels he is heading into the new season in the best shape of his career. "I've sacrificed a few meals," the 26-year-old joked when complimented on his figure by Sky Sports F1's Johnny Herbert. "It has been a good winter, obviously it was a difficult finish in Brazil (where he crashed out) but I think it was the right time to head away and regroup, recharge the batteries and give everyone a break. "It was the longest ever F1 season, with many highs and lows along the way, and this year is obviously very important for us and we will continue to put the work in. I've put in a big effort on the fitness, as I always do, I think working with my trainer for an extra year means we can see the weaknesses and what we need to do. "I enjoy doing the fitness side of it, I treat it as a social event to catch up with friends and it is all about enjoying it and keeping it mixed up. We travel the world and we see many different things and I think that gives you some good ideas to keep yourself ticking away."