TODAY 3rd Hour: Holiday of extreme heat and storms. TODAY’s Checklist: Physical therapy tools. First female master distiller. Start TODAY: July workout.

<p>Severe weather impacting millions of Americans across the country. Also, TODAY’s Checklist: board-certified clinical specialist, Karina Wu shares some exercises that can help you relieve those aches and pains. Plus, Craig Melvin meets a chemical engineer who is changing the bourbon business. And, Start TODAY: Stephanie Mansour shares some upper body strength exercises that you can try at home.</p>