DonnaJean Wilde, 59, previously broke a planking world record in March ... at a "90-degree elbow flexion at the bottom of the push-up, with full extension of the arm when pushing up," according ...

After she signed up to attempt to break the world record for the longest plank, Wilde started training by doing hundreds of push-ups a day — and then decided that would be her next challenge.

A “negative” push-up starts at the top ... When you find yourself dropping down quickly, your set is over; take a break. If those options are still too tough for you—or if you just want ...