Day 93 of 100 Days Muscle Resistance Workout Challenge
Focus Topics: Nutrition and hydration. Learn how nutrition and hydration influence muscle growth, recovery, energy, and sleep. Discover how small fueling habits create long-term fitness results.
Learning Material: Nutrition and Hydration
Training builds the signal. Nutrition decides whether the signal gets answered.
Over the last 90+ days, your workouts asked your body a question: “Can you adapt?”
Food and hydration were the reply. Sometimes the answer was “yes,” sometimes “I would have, but you forgot protein again.” (No judgment, this happens to everyone who lives in the real world.)
Today is not about macro perfection or moralizing food. It’s about noticing cause and effect:
- Which meals supported steady energy?
- Which habits helped recovery?
- Which patterns quietly sabotaged you?
Think of your body less like a machine that needs exact inputs and more like a campfire.
Protein is the logs. Carbs are the kindling. Fat keeps the fire steady. Water keeps the whole thing from smoking you out. Miss one consistently, and the fire doesn’t go out, but it burns weaker.
Key Insights
1. Protein timing matters more than protein obsession
Science shows muscle protein synthesis is stimulated repeatedly throughout the day, not just by one heroic meal1. Missing protein isn’t catastrophic, but missing it often adds up. Consistency beats precision.
2. Hydration affects strength more than people admit
Even mild dehydration can reduce strength, focus, and perceived energy. Fluctuations in body composition measurements often reflect water shifts rather than real muscle gain or loss. Your scale is easily fooled by a glass of water.
3. Energy availability influences recovery and sleep
Undereating, especially carbs, can raise stress hormones. This doesn’t just affect workouts; it can also disrupt sleep and leave the body feeling “on edge.” Sometimes, poor recovery isn’t a training issue. It’s a fueling one wearing a disguise.
I have been using the Fitbit app to track my sleep quality and duration for over a decade. In my experience, eating anything, especially carbohydrates, just a few hours before bedtime, significantly reduces my sleep quality. Therefore, I try to avoid eating or drinking anything sugary before I sleep. However, this can be challenging during the holiday season when I visit multiple households. We usually have dinner early, but not every household follows the same schedule.
Example / Metaphor
Imagine trying to renovate a house, but the supply truck only shows up sometimes.
The workers don’t quit. They just slow down, improvise, and leave things unfinished.
Your muscles behave the same way. They adapt, but only as well as the materials allow.
Or more simply:
You can’t expect a plant to grow faster by yelling at it. You water it.
The Energy Audit (5 minutes):
- Look back at days you felt strong or clear-headed.
- Note what you ate before and after training.
- Then look at low-energy days. What was missing, not what was “bad”?
End with one sentence:
“When I fuel ___, my body responds by ___.”
My Reflection
I’ve noticed clear patterns between what I eat and drink and how my biomarkers change. For example, if I eat a very salty meal in the evening, my weight increases by about 1.2–1.6 pounds the next day. When I work out the day before, my measured muscle mass tends to increase as well.
I often lose weight on Mondays, when I go into the office. At work, I don’t always have time to eat protein-rich foods like eggs or cheese throughout the day. To address this, I started bringing protein powder so I could make a protein shake outside of lunch hours. This helped reduce muscle loss in the following days, although I still saw a decrease of about 0.6–0.8 pounds.
During events such as Thanksgiving or Christmas, when meals are more calorie-dense, my weight temporarily increases. On Thanksgiving Day, I gained nearly two pounds, even though I was careful with portion sizes. My muscle mass also increased, which suggests that my muscles may have been replenishing what was used during training. This weight gain disappeared within a few days.
I’m glad I’ve learned to interpret these fluctuations more accurately. Many factors influence short-term changes, and understanding them helps me stay calm and in control rather than reacting emotionally.
What matters most is the long-term trend. I am now about six pounds lighter than when I started this challenge. I can perform 70 push-ups a day and more than 20 per set, representing a significant improvement in strength.
Biometric data
Change in Weight from Day 1: -9.2 lb.
Skeletal Muscle: 40.2 %
Muscle Mass: 92.8 lb.
Adjustment Ideas (Strategic Adjustment)
Choose one next Saturday—small enough to keep when life gets messy.
- Protein insurance habit: Add one “default protein” you don’t have to think about (shake, yogurt, boiled eggs). Not optimal, reliable.
- Hydration anchor: Tie water intake to an existing habit (after waking, after workouts, after brushing teeth). No tracking app required for those who prefer not to use any app.
- Pre-sleep fueling tweak: If evenings feel weird or sleep is shallow, experiment with a small carb-focused snack at night for one week. Think support, not indulgence.
Note
- M. M. Mamerow et al., “Dietary Protein Distribution Positively Influences 24-h Muscle Protein Synthesis in Healthy Adults,” The Journal of Nutrition 144, no. 6 (2014): 876–880, https://doi.org/10.3945/jn.113.185280 ↩︎