Rumble Boxing Sunnyvale on Instagram: "🔥 NEW CLASS ALERT 🔥 Rumble fam, meet Rumble Strong 💪 This 45 minute class is all about strength with no bags and no boxing. Just lifting, form focused training, and controlled movements 🏋️ 6 minute rounds with a heavy focus on technique 👀 Catch Coach JT ( @_rumblejt ) breaking it down along with a sneak peek of what is waiting for you in the studio! Book your spot today! #RumbleFam"