A 5mm to 6mm mat with dense construction provides the best knee protection for most practitioners. Material density matters more than raw thickness; a well-built 5mm rubber mat cushions better than a cheap 10mm foam mat that compresses under pressure.

Yoga mats range from 1mm (travel) to 15mm (ultra-thick). Most quality brands max out at 6mm to 8mm because anything thicker starts to compromise balance and stability. For joint issues, prioritize material density and dual-layer construction over simply choosing the thickest option available.

Yes. Mats above 6mm create a softer, less stable surface that can make standing poses, single-leg balances, and transitions feel unstable. Your feet sink slightly, which reduces proprioceptive feedback. If you need joint protection, choose a dense 5mm to 6mm mat over a soft 10mm mat.

For most practices, 6mm is the better choice. It provides meaningful cushioning while maintaining enough firmness for stability. An 8mm mat is ideal for purely restorative or therapeutic practices where you spend most of the session on the floor and rarely stand.

Yes. Thick mats are excellent for Pilates, stretching, and bodyweight floor exercises where cushion is the priority over balance. The extra padding protects your spine, hips, and tailbone during exercises like roll-ups, bridges, and leg lifts. A 6mm mat is a solid crossover choice.