Lajuana is 89, with the body and mind of someone decades younger. What are the secrets of the superagers?

Why do some people age better than others? Five extraordinary individuals - who scientists are studying - share their tips

Lajuana Weathers is determined tobe the healthiest version of herself. She starts each day with a celery juice, is always trying to increase her step count, and meditates daily. Weathers is also 89years old. And she has no plans to slow down. Iwake up in the morning and feel blessed that I have another chance at a day of life," says the grandmother of six, and greatgrandmother of six more, who lives in Illinois in an independent living facility for seniors. I look at my life as a holistic entity, and in that life is my physical, social, emotional and spiritual wellbeing. I have to take care of all of those. That's what I like about the ageing process. All the clutter of raising children is out and Ican concentrate on the wellness of me."

Weathers is a superager. This isn't a self-proclaimed label, but one backed up by science - she is part of the SuperAging Research Initiative at the University of Chicago. To qualify for the study, you have to be over 80 years old and have memory performance that's at least as good as the average 50- to 60-year-old. There are about 400 superagers enrolled across North America.