Lehallel
Getting it ready…

Torah · 2:39

Netzoir: Not The Exercise or Omega 3

607 views · May 10, 2026

Rabbi Daniel Glatstein

Rabbi Daniel Glatstein discusses the deeper meaning behind the term 'Netzoir' and its relevance to Jewish law and health.

Read the notes on this shiur: outline, sources, and more from Rabbi Daniel Glatstein →

Ask this shiur

Ask in your own words — the answer is the exact moment this shiur speaks to it.

What’s said in this shiur

The opening of this shiur, in Rabbi Daniel Glatstein’s own words — taken from the captions, so names and Hebrew terms may be approximate.

Do you take omega-3 every day? You know, omega-3 could really prolong your life. Also, flaxseed oil. Flaxseed oil is great. >> [music] >> It really is a a great life extender. What about whey? Whey protein really gives extension to one's stay in this world. What about exercise? Do you make sure to exercise at least 30 minutes every day? You know, there's a lot of things that a person could do to [music] preserve and ensure long life. But none of the above is [music] the most important. It's not omega-3. It's not exercise. It's not flaxseed oil. The most important [music] thing that we could do to extend our stay in this world is what David Hamelech teaches us. David Hamelech says, "Mi ha'ish ha'chefetz chaim?" Who is the man who desires life? "Netzar netzar l'shon ch'veira." [music] Guard your mouth from evil. Be careful with the words that you say. You know, the Gemara tells us about Rav Alexandri [music] who went out into the street. He says, "Man boi chayei? Man boi chai?" Who wants life? Who wants life? And everyone came running to him.

Jump to a moment

  1. 0:07Do you take omega-3 every day? You know, omega-3 could really prolong your life. Also, flaxseed…
  2. 0:38exercise. It's not flaxseed oil. The most important [music] thing that we could do to extend…
  3. 1:09And he spilled the beans. He revealed the secret. [music] He said, "Mi ha'ish ha'chefetz chaim?"…
  4. 1:40seriously as we take sleep [music] and flaxseed oil and omega-3 and exercise. >> [music] >>…
  5. 2:12extend your lifespan. May Hashem give us siyata d'Shmaya to appreciate this great [music] eitzah of…

Every second of this shiur plays inside Lehallel — a filtered YouTube library of Torah, music and shiurim. No ads, no comments, no autoplay.

More from Rabbi Daniel Glatstein

Get the week’s best, by email

One email a week — a handful of shiurim and music. No account needed.

Know a family who would use this? Give a Lehallel membership.