:## Analysis of Source Material
1. Core Topic & User Question:
The article discusses the “plank challenge” that went viral in 2025. it explains what a plank is, its benefits, and potential contraindications.The underlying user question it addresses is highly likely: “What is the plank challenge, why is it popular, and what are the benefits and risks of doing planks?” or “What are the benefits of doing planks?”
2. Optimal Keywords:
* Primary Topic: Plank Exercise / Core Strength
* Primary Keyword: Plank
* Secondary Keywords:
* Core Strength
* Plank Challenge
* Fitness
* Exercise Benefits
* Back Pain
* Isometric Exercise
* Core Exercises
* Posture Advancement
* Muscle Strengthening
* Fitness Challenge
* Health & Wellness
* Resistance Training
* Bodyweight Exercise
* Lower Back pain
* fitness Influencers (Linda Morselli, Renata Zanchi – potentially useful for context)