Fitness Tips That Actually Work – Expert Guide

Fitness advice is everywhere. Social media feeds overflow with new hacks, rules and promises of your best body, while age-old beliefs linger in conversations at home and in the workplace. From supplement myths to spot reduction, the confusion can push people toward unrealistic goals, leaving them frustrated when progress plateaus and ready to quit when their bodies don’t change on demand.

So what methods actually work? The Root spoke with William McCray, known as McCrayzy, a personal trainer with a degree in kinesiology and 18 years in the fitness industry, to separate fact from fiction. His insights cut through the noise and offer a clearer path to supplement myths and sustainable change.

You Don’t Have to Go ‘Cold Turkey’ on Monday

Many people start their fitness journey with a complete overhaul: more exercise, fewer favorite foods, an entirely different routine overnight. McCray said that mindset often kicks in before weddings, reunions or vacations, and it pushes people to expect dramatic results on an unrealistic timeline. Instead, he recommends starting with one change and building from there.

Change Starts in the Mind

McCray said fitness change begins with mindset. Before worrying about workouts or meal plans, he urges people to understand why they’re starting in the first place. According to McCray, their “why” should be “meaningful,” not “superficial,” because, as he put it, “you’re going to have to change what you’re doing.”

You May Not Need to Chug 8 Glasses a Day

This is not permission to replace water with coffee or your favorite carbonated beverage. Still, McCray advises that the “eight glasses a day” rule is better understood as a baseline than a universal mandate.

Hydration needs vary based on body size, activity level and supplement use such as creatine. If you need a simple gauge, check your urine. Dark yellow urine can signal that you need to drink more water.

Supplements Aren’t Shortcuts

Supplements are meant to support your routine, not do the work for you. McCray said taking them without healthy eating and movement won’t help you. “Supplements are not a replacement,” he emphasized. “They supplement what you should be already doing.”

Most supplements are unnecessary, but McCray pointed to creatine and whey protein as two worth considering.

Muscle Won’t Make Women Masculine

McCray noted that many women avoid creatine or strength training because they worry about getting “too big.” That fear is misplaced. Women don’t have the testosterone levels to build muscle “like a man” without testosterone supplementation.

Strength Training Isn’t Just for Grown-Ups

There’s no evidence that resistance training stops kids from growing. The old belief that it stunts growth simply doesn’t hold water, and the Mayo Clinic agrees.

For younger athletes, McCray said the focus should be on form, fundamentals and functional movement, not heavy lifting. Bodyweight work, resistance bands, kettlebells and sport-specific drills are better options.

Protein Is Probably the Missing Piece

Many people likely aren’t getting enough protein. For the average adult, the American Medical Association recommends about 0.36 grams of protein per pound of body weight per day, or roughly 54 grams for a 150-pound person. People who strength train may need more. McCray said whey protein can be a practical way to increase intake without forcing down another full meal.

You Can’t Out-Train a Bad Diet

While exercise is beneficial, it can’t erase consistently poor eating habits. McCray said that while some people have rare genetic exceptions, most can’t out-train a bad diet. For those seeking lasting change, “There’s no way around changing your nutrition, your diet,” he said.

Sweat is Not a Calorie Counter

Sweating more doesn’t mean you’re burning more calories or more fat. McCray said sweat is simply the body’s cooling mechanism, and some people naturally sweat more than others.

No Pain, No Gain? Not Exactly

McCray said soreness after a workout can be normal, especially when muscles are challenged in a new way. But swelling, skin discoloration and the inability to move a joint are warning signs that something may be wrong. If you experience those symptoms, consult a physician.

Breakfast Before Burpees?

Whether to do cardio on an empty stomach depends on the person. McCray said “fasted cardio” works for some people but not everyone. For those who prefer to eat first, he recommends eating about 90 minutes before a workout and choosing complex carbs like baked sweet potatoes, whole-grain toast with peanut butter, or quinoa.

Crunches Can’t Burn Belly Fat

McCray said spot reduction is one of the most common myths he hears. Targeted exercises can strengthen muscles in a specific area, but they cannot selectively burn fat there.

A Longer Workout Doesn’t Mean a Better Workout

You don’t need 90 minutes in the gym to get results. McCray said efficiency matters more than time. For example, a twenty-minute circuit with short rest periods and higher intensity can accomplish more than a longer, low-intensity session. Recent research in healthy young men also suggests that a few minutes of sprint interval exercise can have stronger effects than 60 minutes of moderate exercise.

Being ‘Basic’ Is a Flex

When it comes to what actually works in getting results, McCray said, “the basics work.” He warns against overcomplicating fitness with extreme or starvation diets. Instead, focus on eating well, getting the right nutrients and proportions, and moving your body at least three times a week. That consistency, not perfection, builds the body you want.