Dr. Nakul Gupta
RX15 articles

Fuel & Move

Diet, movement, and yoga plans grounded in what actually holds up in practice.

6 min read

What Alcohol Actually Does to Your Weight and Metabolism

Beyond the calories in the glass, alcohol changes how your body handles everything else you eat that day — in a way most people don't account for.

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6 min read

The Nutrient Gaps I See Most Often in Vegetarian and Vegan Diets

A well-planned plant-based diet can meet virtually all nutritional needs. The specific, common gaps I actually see in clinic are worth naming directly.

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6 min read

What "Zone 2 Training" Actually Means, and Why It's Not About Going Slow for No Reason

Heart rate zones get thrown around constantly in fitness content. Here is what they actually represent physiologically, and why the "easy" zone matters more than it sounds.

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6 min read

Bone Health Is About More Than Vitamin D — Here's the Fuller Picture

Vitamin D gets most of the attention in bone health conversations. Several other factors matter just as much, and some matter more.

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6 min read

Post-Workout Nutrition: What Actually Matters, and What's Mostly Myth

The "anabolic window" gets treated as urgent and narrow. The real evidence is considerably more relaxed than the supplement industry suggests.

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6 min read

You're Probably Getting Half the Fiber You Need — and It Matters More Than Protein

Fiber gets a fraction of the attention protein does, despite arguably stronger evidence linking it to long-term health outcomes.

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6 min read

How Sleep Debt Quietly Sabotages Your Diet and Your Workouts

You can eat well and train consistently and still see poor results if this one variable is off — and most people never connect the dots.

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6 min read

Stretching Before or After Exercise? The Evidence Says Something Different Than Most People Think

Decades of gym-class habit versus what the actual research on stretching timing shows — they don't fully agree.

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6 min read

How Much Water Do You Actually Need? The "8 Glasses a Day" Rule Is a Myth

The number has no real scientific origin, and the actual answer is both simpler and more individual than a fixed daily target.

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6 min read

Intermittent Fasting: What It Actually Does, and What It Doesn't

Separating the genuine evidence from the version of intermittent fasting sold as a metabolic shortcut.

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7 min read

How Much Protein You Actually Need (Most People Guess Badly in Both Directions)

One group is eating far less than they think. The other is buying supplements they do not need. Here is where the real number sits.

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6 min read

The 10-Minute Walk After Meals Is the Most Underrated Thing You Can Do

It requires no equipment, no gym, and no fitness base — and it directly addresses the part of blood sugar that fasting tests never show.

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7 min read

Why Crash Diets Fail — The Physiology, Not the Willpower

Regaining the weight is not a character failure. Your body runs a specific set of countermeasures, and they are quite effective.

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7 min read

After 40, Strength Training Matters More Than Cardio

Not because cardio stops working. Because after this point you start losing something that cardio does not protect.

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5 min read

The 20-Minute Yoga Sequence I Give Most of My Desk-Bound Patients

Not a workout. A maintenance routine for the specific damage a chair does to your body, eight hours a day, five days a week.

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