Four Supplements Actually Worth Knowing

Not every supplement deserves a place in your routine, but these four have the research to back them up. Here's what they do, how to use them, and what the science says.

Caffeine, Protein Powder, Creatine & Electrolytes

Caffeine

The world's most widely used psychoactive compound.

Caffeine works by blocking adenosine, which is your brain's natural fatigue signal. By occupying adenosine receptors, caffeine keeps you feeling alert and focused. But that's not all: it also increases the density and efficacy of dopamine receptors, meaning dopamine has a stronger effect on motivation and drive when caffeine is in your system.

Quick takeaways

• Wait 60–90 minutes after waking before your first cup to avoid the post-caffeine crash

• Stop caffeine 8–10 hours before bed to protect sleep quality

• A typical effective dose is 50–200 mg per sitting, up to 400 mg daily for most adults

• If you're not caffeine-adapted, start low and increase gradually

Effective dose - 50–200 mg

Daily max - ≤400 mg

Cutoff before bed - 8–10 hrs

Wait after waking - 60–90 min

Protein Powder

A convenience tool, not a food replacement

Protein powder delivers the same amino acid building blocks as whole foods, but it's missing the vitamins, minerals, and healthy fats that make those foods so valuable. Think of it as a gap-filler. It's useful when life gets busy, not a substitute for real meals.

Whole-food protein

• Naturally rich in vitamins & minerals

• Slower digestion = longer satiety

• Reduces overeating

• Requires prep & cooking

Protein powder

• Quick, convenient, portable

• High protein, low calories

• No cooking required

• More processed, fewer micronutrients

Food-first philosophy

• Build your protein intake around whole foods first, specifically complete proteins

• Use protein powder to fill gaps, not as the foundation

• Most useful for athletes, busy professionals, and those eating plant-based

• Common options: whey, casein, pea, soy, and egg white protein

Creatine

One of the most researched supplements in existence

Your body already makes creatine (about 1–2 grams per day) using amino acids in the kidneys, liver, and pancreas. Around 95% of it is stored in skeletal muscle, where it helps rapidly regenerate ATP, the body's immediate energy currency. Supplementing increases muscle creatine stores by 10–40%, giving your muscles more fuel for explosive efforts.

How to take it

• Loading phase (optional): 20 g/day split into 4 doses for 5–7 days

• Maintenance: 3–5 g of creatine monohydrate daily

• Mild side effects (water retention, occasional nausea) are manageable by splitting doses

• When you stop, your body returns to natural production and gains are mostly retained with consistent training

Beyond muscles, creatine also supports brain health, improving memory, processing speed, and cognitive performance during sleep deprivation. These effects are especially notable in older adults and in vegetarians, who tend to have lower baseline creatine from diet.

Daily maintenance - 3–5 g

Loading dose - 20 g/day

Loading duration - 5–7 days

Muscle store increase - 10–40%

Electrolytes

Hydration is more than just water

Electrolyte powders replenish essential minerals (sodium, potassium, magnesium, calcium) lost through sweat or illness. Without them, even well-hydrated people can experience muscle cramps, fatigue, and brain fog.

"Zero-carb sounds great for marketing, but biology prefers balance."

The carbohydrate insight

• Sodium and glucose are co-transported in the intestine, pulling water into the bloodstream faster

• Research supports including a small amount of carbs: ~8 g per 16 oz of fluid

• Pure zero-carb electrolyte products may absorb more slowly than marketed

You can also get electrolytes from food:

Sodium - Dill pickles, olives, table salt, cured meats

Potassium - Avocados, bananas, sweet potatoes, spinach

Magnesium - Pumpkin seeds, almonds, spinach, tuna

Calcium - Milk, yogurt, cheese, kale

The bottom line

A supplement is something that adds to a solid foundation, not a shortcut around it. Caffeine sharpens focus when timed right. Protein powder fills gaps when whole foods fall short. Creatine provides a well-documented performance and cognitive edge. Electrolytes keep your body's chemistry in balance. Used thoughtfully alongside good nutrition, sleep, and training, all four earn their place.

Get After It!!

-Austin