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Grayl’s GeoPress Purifier Cleans Dirty Water in Seconds

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Man inserting filter into purifier bottle by streambed


Drinking filtered, cool mountain spring water is about as good as it gets. In addition to providing a satisfying drink, the advantages are many—including less weight to haul from the trailhead and a limitless supply of vital H2O along the way. The one potential pitfall, of course, is that chugging water from unknown sources is an excellent way to get sick from pathogens or other contaminants. The portable remedy: a sturdy and reliable water filter. They’re critical for streams, puddles, and virtually any water source where you just wouldn’t want to risk it. Over the years, I’ve used water filters when traveling through Colombia, Colorado, and California’s Sierra Nevada. In all of those places, they’ve kept me hydrated and healthy.

Some filters are pump-activated while others require sucking dirty water through a straw after it passes through a filter. The former is time-consuming and the latter makes my face pucker up like I’m sucking on a lemon as I struggle to get the water to pass through the purifier.

Enter the GeoPress by Grayl. This highly effective and user-friendly water filtration bottle fixes both problems by using a two-part system. Part one consists of an outer bottle that you fill with dirty water. Part two involves an inner bottle that you then plunge into the dirty water (coffee press-style) which then pushes the water through a filter that meets EPA requirements and is certified to meet or exceed NSF/ANSI 42 (taste and odor) and 53 (health effects) standards.

 


A little elbow grease is worth the effort for cool, contaminant-free mountain stream water.
Courtesy Image

 

It will take some elbow grease to plunge the bottle down and require a handful of seconds for a full plunge. The result of your efforts in this chemical-free process is 99.9 percent protection from viruses, bacteria, protozoa, chemicals, heavy metals, and other particulates like microplastics. It also improves clarity and taste.

Grayl recommends the use of these bottles for everything from “sketchy spigots, hotel sinks, murky rivers, wells, or lakes.”

Replaceable filter cartridges cost about $25 and are super compact (about 3×3 inches)—a portable bargain for capturing pathogens like a magnet as water passes through activated carbon. You’ll want to replace these filters after either 350 plunges or when it takes more than 25 seconds to complete a plunge—or after three years. Whichever comes first.

In addition to providing safe water from sketchy sources, Grayl’s GeoPress bottles are also virtually indestructible. Made from polypropylene, they can withstand being dropped 10 feet onto concrete while filled.

Another advantage GeoPress bottles have over other filters is that once the inner filter bottle is plunged, the freshwater inside can be transferred to another receptacle, such as a Grayl Earthwell Camp stainless steel cup. Once transferred, you can add whatever electrolytes or other flavoring you like.

I used both the Ultralight Compact GeoPress (16 oz, $69.95) and standard GeoPress Purifier (24oz, $89.95) in the Sierra Nevada, dipping from the river and filtering it right on the bank. After a few practice runs, I found it worked best when I leaned my body over the bottle when plunging the inner bottle. It will take some seconds, but the filter does slowly descend. There’s actually some comfort in the fact that it doesn’t descend too fast.

Ultimately, the proof is in the bottle—clear, portable, refreshing water that kept me hydrated and healthy.

[$69.95-$89.95; grayl.com]

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10 Best Porters to Drink Right Now

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A bottle of Deschutes Black Butte Porter




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Best Time-Under-Tension Workout for Total-Body Strength

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Barbell Back Squat


The key to 360-degree muscle: 90-degree eccentric isometrics. It might seem like we’re throwing a lot of geometry at you, but the concept behind time under tension (TUT) is simple, says Joel Seedman, PhD, owner of Advanced Human Performance: “Perform the lowering phase of a movement in a slow, controlled fashion, usually 3 to 5 seconds; pause in the stretched position, typically around 90 degrees; then perform the lifting phase in a powerful yet controlled fashion.” Believe us, a time-under-tension workout can humble even seasoned lifters…Eccentric isometrics are like the pressure cooker of training.

“Rather than mindlessly performing slow-tempo reps, you’re using the increased time under tension as a means to fine-tune your body mechanics and alignment, which requires more mental engagement and focus,” Seedman adds.

If you want to forge functional muscle mass and strength while simultaneously bulletproofing the joints and connective tissue, give this 10-move, full-body eccentric isometrics workout a go.

Directions

Perform the following moves as 90-degree eccentric isometrics following the above protocol. Use heavy weight, but not at the detriment of proper form. Rest 60 to 90 seconds between sets and 2 minutes between circuits. Perform once every 2 to 4 days for optimal results.

Best Time-Under-Tension Workout for Total-Body Strength

Circuit 1

Marius Bugge

A. Barbell Back Squat

Set a squat rack up with heavy weight, then grasp bar and step under it. Squeeze shoulder blades together, then stand to unrack bar and step back with feet shoulder-width apart. Inhale, hinge at hips and slowly bend knees to 90 degrees. Pause, keeping natural arch in low back, then extend through hips to powerfully stand. 3 x 4-6 reps

Athletic man wearing gray T-shirt and maroon shorts renegade row
Marius Bugge

B. Renegade Row

Start in the top position of a pushup with hands shoulder-width apart on moderate-to-heavy dumbbells (shown). Explosively drive right elbow back to row dumbbell toward ribs while balancing on opposite hand and feet. Pause, then slowly lower weight, stopping a few inches above floor. Switch sides after all reps are done. 3 x 5 reps each side

Circuit 2

Athletic man wearing gray T-shirt and maroon shorts doing renegade row Dumbbell Bentover Row in gym
Marius Bugge

A. Dumbbell Bentover Row

Stand with feet hip-width apart, holding two moderate-to-heavy dumbbells in front of thighs, palms facing you. Push hips back and hinge torso forward so it’s nearly parallel to floor, soft bend in knees. Dumbbells should be near shins. Drive elbows back to row weights toward ribs. Pause, then slowly lower down for 3 to 5 seconds. 3 x 4-5 reps

Athletic man wearing gray T-shirt and maroon shorts doing Incline Dumbbell Chest Press with Legs Raised 
Marius Bugge

B. Incline Dumbbell Chest Press with Legs Raised 

Set an adjustable bench to a 30- to 45-degree angle and lie back with dumbbells in either hand. Engage core and lift legs off floor, flexing feet. Press weights overhead, palms in. Slowly lower to 90 degrees, staying tight and compact. Pause, then drive weights up directly over chest. 3 x 4-5 reps

Circuit 3

Athletic man wearing gray T-shirt and maroon shorts doing Dumbbell Bulgarian Squat
Marius Bugge

A. Dumbbell Bulgarian Squat

Stand lunge-length in front of a flat bench, holding heavy dumbbells in each hand by your sides, palms facing in. Rest the ball on top (shoe’s laces) of your right foot behind you on the bench. Slowly lower your body until your front thigh is parallel to the floor. Pause, then drive through your heel to stand. Switch sides after all reps are complete. 2 x 3-4 reps each side

Athletic man wearing gray T-shirt and maroon shorts doing Single-leg Romanian Deadlift
Marius Bugge

B. Single-leg Romanian Deadlift

Stand with feet hip-width apart holding dumbbells or kettlebells. Drive right leg up, foot flexed, knee aligned with hip, making a 90-degree angle. Hinge at hips as you slowly lever your torso toward floor, lowering weights and driving right leg back for counterbalance. Hold, then squeeze glutes to reverse. 2 x 3-4 reps each side

Circuit 4

Athletic man wearing gray T-shirt and maroon shorts doing pullup
Marius Bugge

A. Pullup

Hang from a pullup bar using an overhand grip with legs extended and feet flexed. Engage lats and draw shoulders down your back, then pull yourself up until chin is higher than hands. Pause at the top, then slowly lower. Pause at bottom, then reset before your next rep. 2-3 x 4-5 reps

Athletic man wearing gray T-shirt and maroon shorts doing Kneeling Overhead Barbell Press
Marius Bugge

B. Kneeling Overhead Barbell Press

Hold a bar with moderate-to-heavy load at shoulder level with forearms perpendicular to floor. Kneel at end of bench with feet flexed to grip edge for support. Inhale, engage your core and glutes, then press the bar overhead, pushing your head forward so it passes your face, exhaling at the top.
Slowly lower until elbows are at 90 degrees, then hold to maintain tension. Begin your next rep from here. 2-3 x 4-5 reps

Circuit 5

A. Dumbbell Pushup

Place hands on dumbbells (this provides greater range of motion) at shoulder width and feet wider than shoulder width with just toes touching the ground. Keep head neutral and hips high to increase tension on core, chest and tris and reduce stress on spine. Slowly lower to the floor. Stop
once elbows hit 90 degrees, pause, then push up to start. 1-2 x 6-8 reps

B. Biceps Curl

Stand with feet hip-width apart with moderate-to-heavy dumbbells in each hand hanging by sides. Engage biceps to curl the weights up, keeping upper arms still. Pause at the top, then lower slowly. Don’t let arms drop all the way down to keep greater time under tension on biceps. 1-2 x 6-8 reps


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The Best Jump Ropes for a Killer Cardio Workout

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The Best Jump Ropes for a Killer Cardio Workout




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