Working out at age 75 is not necessarily "hard," but it does require listening to your body, being consistent, and choosing appropriate, low-impact activities. Many age-related limitations are due to inactivity, and exercise can help reduce or reverse the risk of chronic disease and maintain physical function.
Every week, adults 65 and older need:
At least 150 minutes at moderate intensity. This could be 30 minutes a day, 5 days a week. Or 75 minutes at vigorous intensity. Or an equivalent combination at moderate and vigorous intensity.
Healthy habits make a healthier you – which is exactly why habit challenges like 75 Hard have become so popular. The premise is simple. Every day (for 75 days) you do two workouts a day, drink a gallon of water, follow a nutrition plan, read 10 pages of a book and – of course – take a progress picture.
Fatigue can affect individuals in different ways, especially older adults. Although it may be normal, if you always feel tired, you should contact your GP, as this could be a sign of an underlying health condition.
Strength starts to decline in our 40s…
Sarcopenia is the gradual loss of muscle mass that happens with ageing. We reach peak strength in our 20s and according to a 1997 study, power and strength start to decline for both sexes by our early 40s. After that, we lose muscle mass at a rate of around 5% per decade.
New research says 49 is the age when physical activity markedly declines. Why it matters: Putting a number on when exercise drops off could encourage people to establish active habits early — before brain changes can make it harder to get moving.
The name may sound mysterious, but it really just alludes to its format, which is based entirely on the number six: There's a six-minute warm-up followed by a brisk 60-minute walk that's then followed with an easy six-minute cool-down.
According to the National Sleep Foundation, people between 18 and 64 should aim for seven or more hours of sleep a night; people 65 and older should get seven to eight hours each night.
Tips to feel less tired
Vitamin and mineral deficiencies, including B2, B3, B5, B6, B9, B12, C, D, iron, and magnesium, are among the most common causes of unexplained fatigue. Vitamin D deficiencies affect over 50% of the global population, and approximately 12.5% have iron deficiency anemia.
This could lead to physical signs of over-exercising, such as:
What Is the 75 Hard Challenge? (2025 Update)
This habit-forming framework is simple: 4 sessions of Zone 2 aerobic activity (150–300 minutes total per week) 3 sessions of strength training stacked with HIIT (~60 minutes each) 2 sessions of mobility, stability, or restorative practice (yoga, Pilates therapy, or Zoga)
What activities strengthen muscles?
"Human evolution led to five basic movements, which encompass nearly all of our everyday motions." Meaning your workout needs just five exercises, one from each of these categories: push (pressing away from you), pull (tugging toward you), hip-hinge (bending from the middle), squat (flexing at the knee), and plank ( ...
Just as it's possible for children and young adults to exercise too much, it's also possible for seniors to exercise too much. When mature adults exercise too much, it can potentially lead to physical injuries or even fatal medical conditions.
The number one exercise for older adults is often cited as the squat, especially bodyweight or chair squats, because it builds essential leg strength for daily function, balance, and fall prevention, directly improving independence. However, a well-rounded routine also needs balance work (like Tai Chi), cardiovascular exercise (walking, swimming), and other strength training (resistance bands, push-ups) for overall health, as experts emphasize functional movement and power.
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Napping can be good for seniors – as long as they don't sleep too much. A new study in the July issue of the journal SLEEP studied the sleep habits of 1,166 Israeli seniors ages 75 to 94. The results favored older people who take daily naps to supplement short sleep periods during the night.
The 40s and 50s
Both fluctuations can result in lower energy levels, feeling lethargic, and less muscle mass. Again, the 40s and 50s impact people differently, with some noticing fewer effects than others. However, during this stage, people will usually notice they're "getting old".
The 3-2-1 sleep rule is a simple wind-down routine: stop eating and drinking alcohol 3 hours before bed, stop working/mentally stimulating activities 2 hours before, and turn off screens (phones, TVs) 1 hour before sleep, helping you transition to rest by reducing stimulants and preparing your mind and body. It's often part of a larger 10-3-2-1-0 rule, which also adds no caffeine 10 hours prior and no hitting snooze (0) in the morning.
Jennifer Aniston's 80/20 rule is a balanced approach to wellness, focusing on healthy, nutrient-dense foods 80% of the time while allowing for indulgences like pizza, pasta, or martinis (the 20%) without guilt, promoting consistency and sustainability over perfection. It's about moderation, enjoying life's treats, and getting back on track with healthy choices at the next meal or workout, emphasizing that no food is inherently "bad".