Longevity is influenced by several factors, including genetics, age, country of origin, gender, lifestyle, stress levels, diet and activity levels.
While some of these cannot be controlled, others are determined by our own life choices.
Mamie, who is 101 years old, suggested that the key to her longevity could be regular exercise.
Speaking on the Youtube channel Sprouht, Mamie said: "It's shocking to be [101]. I do not take any medication. All my life I have exercised."
The centenarian said that she has been physically active all her life
YouTube/Sprout
An article published in the National Library of Medicine noted: "Physical activity reduces many major mortality risk factors including arterial hypertension, diabetes mellitus type 2, dyslipidemia, coronary heart disease, stroke, and cancer.
"Results of 13 studies describing eight different cohorts suggest that regular physical activity is associated with an increase of life expectancy by 0.4 to 6.9 years."
Aside from keeping physically active, the centenarian enjoys socialising with others.
Mamie said: "I enjoy people, I enjoy my artwork and I am grateful for the opportunities that I have had. I volunteered and I love helping people.
"I have had a good life and a hard-working one because my parents explained that I had to do something."
The 101-year-old advised others to eat healthily and educate themselves on a variety of topics.
The centenarian said: "You can read some books and spend some time in the library - you have to work hard, pay attention and give your all.
"Choose a good life's work because everybody is not fit for every profession."
Mamie encouraged others to get involved in something they "genuinely enjoy" and also benefits others.
LATEST DEVELOPMENTS
Keeping physically and socially active supports longevity
GETTYAnother centenarian recommended one habit that has kept him strong since the war.
The World War II veteran said that a positive mindset and physical activity are key, noting that he has maintained his muscle strength since his time in service.
The senior shared: "I began working for my living at 14 years of age and then when the war came I was a prisoner of war for four years. Shovelling coal and lifting pig iron made my muscles.
"Although the rest of my body was non-existent, my muscles became very powerful. I could do things because my muscles were [strong]."
