Zack Zweifel, M.S., CSCS

Zack Zweifel, M.S., CSCS

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Strength for athletes and people who train like them
MS, CSCS • 10+ years coaching all levels
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08/15/2026

Wall hinge stretch. Lats, chest, upper back, scapular rhythm. Fantastic drill that you can do anywhere. Add it 🤝

08/12/2026

I continually find myself using this exercise as both a strength movement and an assessment tool. It’s great on its own, but it’s also a fantastic teacher of what a correct squat movement should feel like. Most people should master this before they worry about the barbell.

08/10/2026

The vitamins I’ve been taking for my hips every morning 💊

08/07/2026

One of my favorite exercises in the weight room. Add these cues and you'll feel the difference 🔥 🔥

08/06/2026

Environment is everything.

08/04/2026

The 4️⃣-pack for a cranky low-back.

Save this one ✅

08/03/2026

Simple and effective.

The drills are valuable for all levels. The key is intent. Keep each rep crisp and max effort.

Keep the reps low (5~), the effort high, & plenty of rest between sets.

07/31/2026

You don't have to choose.

07/30/2026

Explosive grappling actions, throws, scrambles, and sprawls demand hamstrings that can hold up at length and speed.

Standard hamstring work is a must, but we also need to train these positions dynamically, with different loads and intent to prepare for sport demands.

This is one way to do that.

07/28/2026

Less, but better.

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Brooklyn, NY