I Ate 800 Calories Daily and Gained Weight. Then I Increased to 1,300+ and Finally Started Losing Fat (Here’s Why Your Body Fights You)

What if the secret to finally losing fat isn’t eating less, but eating more?

For most women stuck in a plateau, that’s exactly what needs to happen.

Fitness expert and coach Cori Lefkowith recently broke down why so many women are spinning their wheels on 800-calorie diets—and how retraining your body to eat more can unlock the results you’ve been chasing.

But here’s the catch: it’s going to feel uncomfortable, the scale might go up first, and you’ll need to trust the process even when everything seems to be going backwards.

Why Your Body Fights You When You Eat More

Lefkowith explains that intuitive eating sounds great in theory, but most people have completely disrupted any natural intuition around food. Years of yo-yo dieting, extreme deficits, and metabolic adaptation have trained bodies to function on dangerously low calories.

It’s why you can be eating 800 calories thinking you’re eating in a deficit when you’re really not.

Your body becomes efficient at surviving on whatever you give it. When you’ve been chronically undereating, your metabolism downregulates to match that intake. You maintain weight on 800 calories not because that’s enough, but because your body has adapted to conserve energy.

This is precisely why increasing calories feels so wrong—both mentally and physically.

Your Body Wants Homeostasis

Lefkowith emphasizes that whether you need to lose 50 pounds or gain 50 pounds, your body wants to stay exactly where it is right now. That’s its comfort zone, even if it’s not optimal.

Your body wants to maintain where it is right now because that is its happy place because this is what it’s comfortable with. Even if it’s not right, even if it’s not optimal, it’s what it’s comfortable with.

When you suddenly increase calories, your body initially treats that as a surplus—not as fuel it can use. It stores those extra calories because it doesn’t trust they’ll keep coming.

What Actually Happens When You Start Eating More

This is where most people panic and quit. Lefkowith warns that the initial response to eating more can include:

• Scale weight increases from water retention and glycogen storage
• Bloating and fullness that feels uncomfortable
• Feeling softer even though you’re training hard
• No visible fat loss despite increased energy

These aren’t signs of failure. They’re signs your body is responding.

The Phases of Metabolic Recovery

Phase One: Energy Prioritization

Your body doesn’t immediately burn fat when you eat more. First, it redirects energy toward processes it had been conserving—sleep quality, hair and nail growth, skin repair, hormone production.

Your body is prioritizing starting to ramp up some of the processes it has become more conservative in.

Phase Two: Muscle Building

With adequate fuel, you’ll get stronger in training sessions. Muscle tissue starts developing before fat loss kicks in because your body needs to trust it can maintain that metabolically costly tissue.

This is why you might see strength gains and feel pumped, but measurements don’t budge yet.

Phase Three: Fat Loss Begins

Only after your body trusts the increased energy intake will it start releasing stored fat. More muscle mass improves insulin sensitivity and metabolic signaling, making fat loss more efficient.

Inches come off before scale weight drops.

Signs It’s Working (Even When It Doesn’t Feel Like It)

Lefkowith stresses that you must step off the scale during this process and track different metrics:

• Improved sleep quality
• Faster recovery between training sessions
• Increased strength and workout performance
• Better energy levels throughout the day
• Faster hair and nail growth
• More spontaneous movement and fidgeting
• Return of hunger cues

These adaptations signal metabolic recovery before visible body composition changes occur.

How to Actually Retrain Your Metabolism

Lefkowith outlines a strategic approach that requires patience and precision.

Rule #1: Make One Change at a Time

Don’t simultaneously increase calories and add more cardio to “offset” the extra food. That defeats the entire purpose.

Focus on strength training, not steady-state cardio. Include walks and sprints if desired, but avoid moderate-intensity cardio that can be catabolic to muscle tissue.

The Macro Strategy

Lefkowith typically keeps clients in a “cut ratio” during reverse dieting, maintaining protein around 40% of total calories.

Research shows that even in calorie surplus, high protein intake prevents unwanted fat gain and preserves muscle mass.

Studies have shown that even eating in a calorie surplus, if our protein is high, we avoid gaining more unwanted fat.

The Calorie Increase Protocol

Start small: Add just 100 calories per day initially. Maintain that for 1-2 weeks while monitoring how your body responds.

Expect an initial jump: Scale weight will likely increase from water and glycogen storage. Bigger calorie jumps (up to 500 for diet breaks) cause larger initial spikes.

Watch the pattern: If weight jumps but then stabilizes, increase another 100 calories after two weeks. If weight continues creeping up steadily, pause calorie increases and begin cycling macro ratios instead.

Build gradually: Once you reach 300-500 calories above starting point, introduce macro cycling while continuing to assess progress markers.

When to Cycle Macros First

The exception to increasing calories first applies when someone has been in extreme restriction or just completed aggressive mini-cut with very high protein (50%).

In these cases, bring macro ratios back to moderate ranges before systematically increasing total calories.

How Long Does Metabolic Recovery Take?

There’s no universal timeline because recovery speed depends on multiple factors:

• Duration of undereating
• Starting metabolic rate
• Training intensity and progression
• Individual metabolic responsiveness
• Willingness to tolerate initial discomfort

Lefkowith notes that most people need to increase at least 500 calories above current intake to reach true maintenance. Those eating under 1,000 calories will require substantially more.

Being willing to push harder initially—accepting more discomfort and scale fluctuation—can actually speed the process compared to tiny, overly cautious increases.

What Maintenance Actually Looks Like

Lefkowith emphasizes that maintenance isn’t static. It fluctuates with activity levels, seasons, food choices, and training phases.

True maintenance involves establishing calorie boundaries where you feel energized, recover well, maintain hormonal balance, and support body composition goals—with flexibility for mini-cuts when needed or strategic muscle-building phases.

I would love to even hear all the experiences because I’ve loved seeing comments on different posts when I’ve shared this information of people saying, I finally embrace this process with you, especially through coaching and it’s been so helpful. I feel the best I’ve ever felt.

The Mental Hurdle

Perhaps the biggest challenge isn’t physical—it’s psychological.

Everything in diet culture screams “eat less, move more.” Doing the opposite feels wrong, scary, and counterintuitive.

But if you’re already eating minimal calories, training hard, and seeing zero progress—or worse, getting softer—continuing that approach guarantees continued failure.

We say we want things easier, but we try harder. So, I would really urge you if you’re not seeing the progress you want, if you’re doing more, eating less, training harder, creating that calorie deficit, and nothing is budging and you feel like you’re even getting softer, this is the time to step back.

Set a realistic timeline—think months, not weeks. Commit to tracking non-scale victories. Trust that temporary discomfort leads to long-term metabolic health.

Because eating more isn’t just about fat loss. It’s about sustainable energy, hormonal balance, and actually enjoying food while building the body you want.