Jennifer LopezAfter giving birth to her long-awaited twins earlier in the year, Jennifer Lopez has reportedly set herself a new ambition for the second half of the year: she wants to participate in a triathlon.

The star, who turned 39 last week, is working with her long-time trainer Gunnar Peterson to get into shape for the event, which includes swimming, cycling and running, later this year and Gunnar told OK magazine: “The workouts change daily, depending on the day, the time and the freedom. She’s going to get it done because she wants to.”

But, he added, she won’t let her training get in the way of looking after her five month old babies, son Max and daughter Emme: “She may be the most efficient multitasker I know. She literally has every aspect of her life in check.

“She doesn’t have a nanny, a chef or a nutritionist. She makes time for the kids. Family comes first.”