Mindfulness- and acceptance-based approaches such as Acceptance and Commitment Therapy (ACT) and Mindfulness Acceptance Commitment (MAC) are gaining momentum with sport psychology practitioners who work to support elite athletes. These acceptance-based, or third wave, cognitive behavioral approaches in sport psychology highlight that thought suppression and control techniques can trigger a metacognitive scanning process, and that excessive cognitive activity and task-irrelevant focus (self-focused attention such as trying to change thoughts) disrupts performance.