Hypermobility is a condition where joints are unusually loose or unstable and often presents itself in people as excessively flexible bodies with poor proprioception (the sense of knowing what space your body is taking up and what it’s doing). The risk of injury that comes with hypermobility means that clients should focus on stability rather than flexibility, avoid extreme ranges of motion, be careful with controlling movement and form, and be aware that their strength will grow slowly. Personal trainers should familiarize themselves with common conditions like hypermobility in order to best support the wide range of individualization their clientele will need.