The same man resting on his porch steps, then carrying a feed sack across the yard at golden hour

Health Report •
Men And Women Over 50

Getting tired faster than you used to? Your muscles may be getting less blood. Here's why it happens, and what you can do about it.

October 6, 2026


You used to work in the yard all morning and still have energy left for the afternoon.

Now you stop to rest. Then you stop again. The stairs feel harder. The yard takes all day. Most people blame their age and stop there. But age is not the whole reason.

Why do you get tired faster now?

Is it really just your age?

What do your muscles need to keep going?

And what can you start doing today?

Here's something most people never hear. Strong muscles are not enough. Your muscles also need blood, and lots of it, every time you climb, lift or walk.

Blood brings your muscles the oxygen and nutrients they use. When less blood gets there, you can get tired sooner.

You can't see this happening. You can only feel it.

Below is what is happening inside your body, in 5 short parts. Each part ends with one thing you can do.

Why You Get Tired Faster After 50, And What Helps

A man in his sixties stopping to catch his breath partway up a country road

1. Less Blood May Reach Your Muscles As You Age

When you climb the stairs or carry in the groceries, your muscles need more blood. A lot more.

At rest, your muscles get about 20% of the blood your heart pumps. During hard work, that can go up to 80% or more.

But studies of healthy people often find less blood reaching working leg muscles in older adults than in people in their 20s.

Same stairs. Same groceries. Less blood getting there.

Less blood can mean less oxygen for your muscles. That may be one reason you get tired faster.

📄 What Actually Helps

Walk every day. In one study, men over 50 who did not exercise started walking. After 3 months, their blood vessels opened up about 30% better. That was as good as the younger men in the study.

It's not only your muscles. It's how much blood reaches them.

Up To 80% During Hard Work
Less With Age
Walking Helps
A man watering his tomato garden with a garden hose at sunrise

2. Your Body Has Its Own Way To Open Blood Vessels

Your body makes something called nitric oxide (NY-trik OK-side). It is made in the inside lining of your blood vessels.

Nitric oxide tells your blood vessels to relax and open wider. When they open wider, more blood can get through to your muscles.

Think of a garden hose. If you squeeze it, only a little water comes out. If you let go, a lot more water comes out. Nitric oxide is what tells your blood vessels to let go.

Three scientists won the 1998 Nobel Prize for discovering this.

Here is the problem. Studies show your body tends to make less nitric oxide as you get older, even when you are healthy.

📄 What Actually Helps

Eat leafy greens and beets. Arugula, spinach and beets give your body a second way to make nitric oxide. Eat some a few times a week.

Less nitric oxide. Blood vessels that open less. Less blood getting through.

1998 Nobel Prize
Opens Blood Vessels
Drops With Age
A woman slicing a watermelon on a cutting board next to a bowl of almonds and walnuts

3. Your Body Makes Nitric Oxide From Two Things You Eat

The first is arginine (AR-juh-neen). It's in meat, fish, nuts and beans. Your body uses arginine to make nitric oxide.

The second is citrulline (SIT-ruh-leen). It was first found in watermelon, and it is named after it. Your body turns citrulline into more arginine.

Arginine makes nitric oxide. Citrulline makes more arginine. Your body uses both.

Most people have never heard of either one. But your body uses them every single day.

📄 What Actually Helps

Eat watermelon when it's in season, and a handful of almonds or pumpkin seeds most days. Chicken, turkey, fish and beans have arginine too.

Knowing this is easy. Getting both every single day is the hard part.

Arginine: Meat, Fish, Nuts
Citrulline: Watermelon
Your Body Uses Both
A man in reading glasses turning a bottle of Nitric Boost to read the label

4. A Simple Way To Get Arginine And Citrulline Every Day

If you don't want to eat watermelon and nuts every single day, there's an easier way. It's called Nitric Boost, from Alex Jones Naturals.

Two capsules give you 400mg of arginine and 300mg of citrulline. The citrulline comes in two forms. One of them is HydroNOx®, a name-brand citrulline.

It also has 400mg of AKG, which your body uses to make energy. Plus 100mg malic acid, 80mg beta-alanine, 30mg niacin (vitamin B3) and 30mg calcium. Every amount is printed on the label.

It's made to support healthy blood flow, muscle performance and recovery.*

📄 What To Look For

Before you buy any supplement, look for exact amounts and lab results. This batch was tested by outside labs. Lead, arsenic, cadmium and mercury were all far below their limits. E. coli, salmonella and staph: none found.

Every amount on the label. Tested by outside labs. Nothing hidden.

400mg Arginine
300mg Citrulline
Name-Brand HydroNOx®
Lab-Tested For Metals
Alex Jones Naturals Nitric Boost, 60 capsules, 30 servings

400mg

Arginine in every serving

300mg

Citrulline, from 2 forms

0

Caffeine or stimulants

30

Servings in every bottle

A man on his back porch with two capsules in his palm and a glass of water, Nitric Boost on the rail

5. Your Body Makes Nitric Oxide All Day, Every Day

Your body makes nitric oxide all day long. So what you do every day matters more than what you do once in a while.

Most of us walk some days and not others. We eat greens when we remember. That is real life.

That's why Nitric Boost is made to be easy. Two capsules, once a day, with water. No caffeine. No powder to mix. No flavor.

And if the name sounds familiar, there's a reason. When we asked our customers which products they wanted, Nitric Boost came up by name. It's back. And your purchase keeps Alex Jones on the air.

📄 What Actually Helps

Keep the bottle next to your coffee maker. Take two capsules with breakfast every day. And keep walking.

Two capsules. Once a day. Every day.

No Caffeine
No Stimulants
2 Capsules A Day
30-Day Supply
60 capsules · 30 servings · 2 a day
No caffeine, no stimulants
Pause or cancel anytime · 30-day returns

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Talk to your doctor before use if you take blood pressure medication, nitrates such as nitroglycerin, or erectile dysfunction medication, or if you have a medical condition. Niacin may cause a brief, harmless warm flushing feeling in some people. Read the full label before use, including the California Prop 65 warning.

The buttons on this page start a subscription: one bottle of Nitric Boost for $29.99, renewing every 30 days until you cancel. You can pause or cancel anytime.

Lab results are from the Certificate of Analysis for Lot 2607047: lead 0.136 ppm (limit 1.0), arsenic 0.113 ppm (limit 3.0), cadmium under 0.073 ppm (limit 1.0), mercury under 0.005 ppm (limit 0.4); E. coli, salmonella and Staphylococcus aureus absent. Heavy metal and microbiological testing was performed by ISO 17025-accredited third-party laboratories. HydroNOx® is a registered trademark of Vireo Systems, Inc. People shown in photos are models.

Sources. Reason 1: Klabunde RE, “Skeletal Muscle Blood Flow,” CV Physiology; Proctor DN, Parker BA, Microcirculation 2006;13(4):315–27; Hearon CM, Dinenno FA, J Physiol 2016;594(8):2261–73; DeSouza CA et al., Circulation 2000;102(12):1351–7. Reason 2: The Nobel Prize in Physiology or Medicine 1998, NobelPrize.org; Torregrossa AC, Aranke M, Bryan NS, J Geriatr Cardiol 2011;8(4):230–42; Lidder S, Webb AJ, Br J Clin Pharmacol 2013;75(3):677–96. Reason 3: Förstermann U, Sessa WC, Eur Heart J 2012;33(7):829–37; Curis E et al., Amino Acids 2005;29(3):177–205; Volino-Souza M et al., Nutrients 2022;14(14):2913; USDA Agricultural Research Service, 2007; Cleveland Clinic, “L-Arginine,” 2022.