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.
The largest synthesis of its kind — an umbrella review of 57 pooled data analyses drawn from 800 individual studies and 57,930 participants — was published in the British Journal of Sports Medicine in February 2026. The conclusion was unambiguous: exercise produces medium-to-large reductions in depression symptoms, comparable to and in some cases exceeding both medication and talking therapy.
Crucially, every exercise format tested showed improvement — aerobic, resistance, mind-body, and mixed training. The strongest antidepressant effects were observed in supervised or group settings and in young adults aged 18–30. For anxiety, resistance training, aerobic, and mixed training all produced medium-sized positive effects.
A separate 2025 meta-analysis in Frontiers in Psychology analyzed 29 randomized controlled trials on resistance training specifically — and found a large effect size (SMD ~0.94), suggesting lifting alone is as effective as many psychosocial interventions for clinically diagnosed depression.
- If you're dealing with low mood or anxiety, structured training is a clinically validated intervention — not just a feel-good activity.
- Supervised or group training produces the strongest antidepressant effects — accountability and community amplify the benefit.
- Resistance training alone carries a large effect size — lifting twice a week is enough to move the needle on mental health.
- Exercise has no side effects, no cost barrier once established, and improves physical health simultaneously — making it the most efficient mental health tool available.