HAVE YOU HEARD?
Every Sunday, Coach Lionel decodes the latest research in strength, nutrition, and performance science. No fluff. No hype. Just what the data says — and what it means for your training.
Researchers at Tel Aviv University analyzed hundreds of men and women aged 20–75 — all on identical low-calorie diets. Same calorie deficit, three groups: no exercise, aerobic only, or resistance training.
Total weight lost was nearly the same across all groups. But the composition of that loss was completely different. The resistance training group was the only one that preserved — and in many cases increased — muscle mass while losing fat. Both other groups lost significant muscle alongside the fat.
- If you're in a calorie deficit, resistance training is non-negotiable — not a bonus.
- Cardio alone while cutting actively accelerates muscle loss.
- Track body composition — not just scale weight.
- Protein must be high during any cut: 1.6–2.2g per kg bodyweight minimum.
- The goal is more muscle at less fat mass — not just less mass.
A Boston University review published in January 2026 confirmed what neuroscientists have suspected for years: different types of training reshape different regions of the brain.
Aerobic exercise — running, cycling — increases gray matter volume in the cerebellum and temporal lobe and boosts BDNF (brain-derived neurotrophic factor), the protein responsible for neuron growth and survival. It also increases connections in the brain's frontal and motor cortex.
Resistance training — lifting — primarily grows gray matter in the basal ganglia and strengthens the posterior cerebellum. The basal ganglia govern motor control, procedural learning, and habit formation. Meaning: your squat pattern isn't just a physical skill — it's a neural one.