Best Overall
FR Score 9.4 out of 10, Exceptional
Concept2Cardio Machines
RowErg
The rower gyms and athletes trust, built to last for decades
5 videos
AmazonBrand store
Shop by goal
Cardio & Endurance
Treadmills, walking pads, rowers and bikes, plus hydration and trackers for longer sessions.
15 products · 3 categories
Most of the cardio benefit comes from simply doing more of it, so the best machine is the one you will actually use: a quiet walking pad under a desk, a sturdy treadmill or rower for harder sessions. For long or hot workouts, sodium-based electrolytes can help you replace what you sweat out, and a tracker shows whether your training is adding up.
Compare options in walking pad vs. treadmill, and read electrolytes explained before you buy a hydration mix.
Every product for this goal
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products
Best Overall
FR Score 9.0 out of 10, Exceptional
GarminFitness Trackers & Wearables
Forerunner 265
The AMOLED running watch that still sets the bar for training data per dollar
4 videos
AmazonBrand store
Best Overall
FR Score 8.7 out of 10, Excellent
LMNTElectrolytes & Hydration
Zero Sugar Electrolytes Drink Mix
1,000 mg of sodium and zero sugar: the salty cult favorite for heavy sweaters.
5 videos
AmazonBrand store
Best Folding Treadmill
FR Score 8.8 out of 10, Excellent
NordicTrackCardio Machines
T Series 10 Treadmill
A roomy folding treadmill with 12% incline and a tilting 10-inch touchscreen
3 videos
AmazonBrand store
Best Walking Pad
FR Score 8.5 out of 10, Excellent
UREVOCardio Machines
Strol 2E Smart 2-in-1 Folding Treadmill
Walking pad by day, jogging treadmill by night, for under $200
4 videos
AmazonBrand store
Best Smart Ring
FR Score 8.5 out of 10, Excellent
OuraFitness Trackers & Wearables
Ring 5
A 40% smaller titanium ring that makes sleep and readiness tracking disappear
4 videos
AmazonBrand store
Best Budget
FR Score 8.4 out of 10, Great
NuunElectrolytes & Hydration
Sport Electrolyte Tablets
Drop-in fizzy tabs with 300 mg sodium and 1 g sugar for about 55 cents a serving.
4 videos
AmazonBrand store
Best for Small Spaces
FR Score 8.4 out of 10, Great
WalkingPadCardio Machines
Z1 Foldable Walking Pad
A slim walking pad that folds in half to hide in a closet or under a bed
4 videos
AmazonBrand store
Best for Recovery Tracking
FR Score 8.4 out of 10, Great
WHOOPFitness Trackers & Wearables
5.0 / MG
The screenless recovery coach, now with 14-day battery and three membership tiers
4 videos
AmazonBrand store
Best Budget
FR Score 8.4 out of 10, Great
AmazfitFitness Trackers & Wearables
Active 2
A $100 AMOLED sports watch with free maps, 160+ modes and no subscription
4 videos
AmazonBrand store
Best Everyday Tracker
FR Score 8.3 out of 10, Great
FitbitFitness Trackers & Wearables
Charge 6
Google's Fitbit band with built-in GPS, an ECG app and a 7-day battery
3 videos
AmazonTikTok ShopBrand store
Best for Everyday Sipping
FR Score 8.2 out of 10, Great
Ultima ReplenisherElectrolytes & Hydration
Daily Electrolyte Drink Mix
Zero sugar, zero calories, six electrolytes: the easy-drinking daily mix that isn't salty.
4 videos
AmazonTikTok ShopBrand store
Best Budget
FR Score 8.2 out of 10, Great
YOSUDACardio Machines
Indoor Cycling Bike
A go-to budget spin bike: stable, quiet and about $200
4 videos
AmazonTikTok Shop
Best for Heat & Rehydration
FR Score 8.0 out of 10, Great
DripDropElectrolytes & Hydration
Original Electrolyte Powder (ORS)
Doctor-developed ORS formula: 330 mg sodium and 7 g sugar in every 8 oz stick.
4 videos
AmazonTikTok ShopBrand store
Most Viral on TikTok
FR Score 7.9 out of 10, Good
Liquid I.V.Electrolytes & Hydration
Hydration Multiplier
A TikTok Shop favorite: big flavor, 500 mg sodium, and 11 g of sugar.
5 videos
AmazonTikTok ShopBrand store
From the blog
Read before you buy
Supplement ScienceElectrolytes Explained: Who Needs Them, and How Much Sodium Is Too Much?
Supplement Science8 min read
Electrolytes Explained: Who Needs Them, and How Much Sodium Is Too Much?
Electrolyte mixes range from 55 mg to 1,000 mg of sodium per serving. Here's who actually benefits, how to match a mix to your sweat, and when it's just extra salt.
Home GymWalking Pad vs. Treadmill: Which One Fits Your Space and Goals?
Home Gym9 min read
Walking Pad vs. Treadmill: Which One Fits Your Space and Goals?
Walking pads win on price, noise, and storage; treadmills win on speed, incline, and running comfort. Here's how to match the machine to your space and goals.
Gear & TechWHOOP vs. Oura vs. Garmin: Choosing the Right Recovery Tracker
Gear & Tech9 min read
WHOOP vs. Oura vs. Garmin: Choosing the Right Recovery Tracker
A screenless band, a smart ring and a GPS watch all promise to tell you how recovered you are. Here's how WHOOP, Oura and Garmin differ on data, comfort and real cost.