Peptides can have very powerful effects. Tirzepatide (Mounjaro, Zepbound) is a peptide, and it's probably the most exciting pharmaceutical in a generation.

There are also peptides that seem to have similar effects as regular exercise; a weekly injection might give you the same benefits as a daily mile run. These haven't been well studied, however, and we don't understand their safety profiles.

But the influencer set has taken these possibilities and run with them, because they're more interested in clicks and views that science and facts.