02/19/2026
Does it matter when you work out your horse???
Have you ever wondered whether the time of day affects how much inflammation your horse experiences during a workout? I stumbled across a study that completely changed how I think about training schedules—and honestly, it's making me rethink my entire supplement program.
Morning Workouts = Less Inflammation
Here's what the research shows: working your horse in the morning is actually easier on their body because inflammation is naturally lower at that time of day.
A 2025 study published in Frontiers in Veterinary Science looked at 10 horses doing moderate exercise in the morning versus the afternoon. What they found was pretty eye-opening.
In the morning:
•Pro-inflammatory markers (IL-6 and IL-1β) were naturally lower—even before exercise started
•Exercise didn't trigger a big inflammatory response
•The immune system was better positioned to handle the stress of training
In the afternoon:
•Inflammatory markers were already elevated at baseline—before the horse even started working
•Exercise caused IL-6 to spike significantly, meaning the body had to work harder to manage inflammation
•The horse's system was already in a more pro-inflammatory state
if you start exercise when the inflammatory baseline is at its lowest, your horse's body doesn't have to work as hard to manage the additional stress from training.
Now, I know this study was only done on 10 horses, so it's not a huge sample size. But I think it's enough for us to take seriously—especially for horses in demanding training programs or those dealing with soundness issues. Timing does matter.
This got me thinking: if inflammation is highest in the afternoon, should I be feeding NutriSana EQ in the evening when inflammation peaks? Or in the morning when it's at baseline? Or maybe right after a workout?
what I found is The Research Says: Post-Workout Feeding Wins
A 2024 study in the Journal of Animal Physiology and Animal Nutrition compared feeding protein supplements with meals (before exercise) versus post-exercise. The results were clear:
Horses fed post-exercise had:
•Better amino acid availability during the 1-3 hour recovery window (when muscle repair and inflammation management are most active)
•Higher levels of key amino acids like lysine and arginine when their bodies needed them most
Horses fed with meals (before exercise) had:
•Lower amino acid levels by the time they exercised and recovered
•Amino acids had already peaked and were declining when the horse needed them
The why: plasma amino acids peak 3-6 hours after feeding. If you feed in the morning and work your horse in the afternoon, those amino acids are already on their way out by the time your horse's body is trying to repair tissue and manage inflammation.
But if you feed within 1-3 hours post-workout, amino acids are rising right when your horse's body is actively repairing muscle, managing inflammation, and building new tissue.
The Split-Dosing Option
Now, if you're feeding twice a day anyway, there's another option: split dosing.
Give about 1/3 of your amino acid/protein supplement in the morning for baseline support throughout the day, then give the remaining 2/3 about 1-3 hours post-workout to maximize amino acid availability during recovery.
This way, your horse gets consistent support but concentrates the nutrients when they're needed most.
One more thing the research emphasized: right after a workout, give electrolytes and water first to restore hydration. Then, within 1-3 hours, feed the protein/amino acid supplement.
Hydration has to come first because every metabolic process—including muscle repair and inflammation management—depends on proper fluid balance.
Mad Barn's comprehensive review on post-exercise recovery breaks this down really well if you want to dive deeper.
For performance horses in demanding work, this is my takeaway :
Schedule morning workouts when possible. It minimizes cumulative inflammatory stress over time. Your horse's body is naturally in a better position to handle the work without triggering excessive inflammation.
If afternoon training is unavoidable (and let's be real, most of us are working horses in the afternoon because of our schedules), recognize that your horse may need enhanced nutritional support to manage the higher inflammatory response. It's not that afternoon training is bad—it just means recovery support becomes even more important.
Daily anti-inflammatory and recovery support matters. Inflammation isn't a one-time event that only happens after injury or competition. It's a dynamic process your horse manages every single day they work. The research shows that inflammation is happening at the cellular level every time a horse exercises—and when that work happens in the afternoon, the inflammatory load is even higher.
Why This Validates NutriSana EQ's Approach
This is exactly what NutriSana EQ was built for: proactive, daily support to help performance horses manage the cumulative inflammatory stress of training—not just reactive interventions after something goes wrong.
The research is clear: amino acids, protein, and recovery nutrients are most effective when they're available during the recovery window—not hours before exercise when they'll be metabolized and cleared before your horse needs them.
For horses training in the afternoon (when inflammation is naturally elevated), post-exercise feeding is even more critical to help the body manage the inflammatory load and support optimal recovery.
Feeding NutriSana EQ after the workout ensures that collagen peptides, amino acids, and gut health support are available when your horse's body is actively repairing tissue, managing inflammation, and synthesizing new protein.
And this ties back to something I've always believed: you can't just inject joints and call it good. If you're not supporting the body's natural anti-inflammatory and repair processes with nutrition, you're only addressing part of the problem. Joint injections manage acute inflammation in a specific area, but daily nutritional support manages the systemic, ongoing inflammatory stress that comes with training.
My Takeaway: After reading, I'm changing my supplement program.
I'm going to start feeding NutriSana EQ post-workout instead of with solely in the evening. My horses train in the morning and afternoon, so now I understand that their bodies are dealing with a higher inflammatory load during certain times. I will do the split program and feed 1/3 Origin/Core/Rebound in the AM, and the remaining 2 hours after the workout.
My main goal is to maximize recovery.
And I'm making sure electrolytes and water come first which is a pretty set standard already.
This isn't about perfection—it's about working smarter, not harder. If morning training isn't an option for you (and it's not for most of us), then optimizing your post-workout nutrition becomes even more important. Your horse's body is going to manage inflammation either way. The question is: are you going to give it the tools it needs to do that job well?
Because at the end of the day, keeping performance horses sound isn't about one magic bullet. It's about consistent, science-backed support that aligns with how their bodies actually work. And now that I understand the timing piece, I can't un-know it. So I'm adjusting, learning, and doing better for my horses.
That's what this journey is all about—staying curious, staying open to new information, and always putting the horse first.
Research Sources:
1.Aragona, F., et al. (2025). Effect of time of day and physical exercise on inflammatory biomarkers in athletic horses. Frontiers in Veterinary Science, 12:1608770.
Read the full study here
2.Graham-Thiers, P., & Bowen, K. (2024). Timing of feeding a protein supplement on nitrogen balance and plasma amino acids during exercise recovery in horses. Journal of Animal Physiology and Animal Nutrition, 108(6), 1723-1733.
Read the abstract here
3.Mad Barn. (2025). Workout Recovery in Horses: Post-Exercise Strategies to Optimize Performance.
Read the full article here
https://pmc.ncbi.nlm.nih.gov/articles/PMC12175248/
