Many people assume that stiffness, aches, and declining mobility are inevitable with age. Dr. Alyssa Lu disagrees.
In a recent YouTube video, Dr. Alyssa Lu, a Doctor of Physical Therapy, shared why she feels stronger and moves better at 36 than she did in her 20s. According to Lu, the difference had nothing to do with genetics or finding the perfect workout. Instead, she credits three simple habits she has practiced consistently. She believes these habits can help anyone improve their strength and mobility over time.
Rather than chasing quick fixes, Lu focuses on building movement capacity that lasts for years.
Stop Randomly Stretching and Train Mobility With Purpose
The first habit Lu recommends is rethinking mobility training.
Instead of jumping between random stretches every week, she encourages people to treat mobility as a skill that improves through focused practice.
“The first thing is mobility, but not just random stretching. This is where most people go wrong.”
Rather than stretching simply for the sake of stretching, Lu advises choosing a specific movement goal, such as achieving a deeper squat, touching your toes, improving posture, or sitting comfortably on the floor.
From there, she recommends spending about 10 minutes three to four times per week working on the positions where mobility feels limited. By consistently revisiting those positions, the body gradually learns that those ranges of motion are safe and worth maintaining.
Build Strength That Supports Everyday Life
Strength training is the second pillar of Lu’s approach, but she believes many people misunderstand what productive training looks like.
Some avoid lifting weights altogether, while others push every workout to exhaustion.
“But strength training should build you up, not break you down.”
Instead of chasing personal records every week, Lu recommends mastering fundamental movement patterns such as squatting, hinging, pushing, pulling, carrying, and rotating.
Progressive overload remains important, but that doesn’t always mean adding heavier weights. Improving technique, increasing repetitions, or moving through a greater range of motion are all valid signs of progress.
Her advice is simple: choose a handful of foundational exercises, track your improvements, and give your body enough time to adapt.
Find Cardio You Actually Enjoy
The final habit focuses on cardiovascular fitness, but Lu emphasizes that cardio doesn’t have to mean running.
Walking, hiking, cycling, martial arts, dancing, recreational sports, or simply increasing daily step count can all improve cardiovascular health if they are activities you genuinely enjoy.
She also highlights the importance of having a goal or community that makes movement feel meaningful rather than something you simply have to check off your to-do list.
“When you are training for something you enjoy, it stops feeling like exercise.”
Consistency Beats Complexity
Lu’s message is that long-term movement quality isn’t built through extreme workouts or endless variety. Instead, it comes from consistently combining purposeful mobility work, progressive strength training, and enjoyable cardiovascular exercise.
For anyone feeling stiff, achy, or less mobile than they would like, her advice offers a practical starting point. Rather than searching for the perfect routine, focus on habits you can sustain. Over time, those small, consistent efforts may do far more for your body than constantly chasing the next fitness trend.
