Medicine ball karate training is one of those exercises that looks simple but absolutely destroys you when done properly. Watching Jakob smashing through these slams to the beep today, I could see the effort written all over his face.

This is what elite youth karate training actually looks like. No glamour. No shortcuts. Just a 13 year old in a yellow training top, going rep after rep, building the explosive power he needs for Brazil.

Why Medicine Ball Work Matters

For kata especially, you need that snap. That explosive hip rotation. That power that comes from your core and travels through your entire body. The medicine ball helps build all of that.

Slam. Catch. Slam. Catch. All to the beep. No rest. No excuses.

His coach is watching from the side, making sure the form stays tight even when the fatigue kicks in. Thats when the real training happens. Anyone can do it fresh. Its when youre tired that you find out what youre made of.

Jakob has been putting in serious work for the JKS World Championships. Every session counts now. Every rep matters. The competition in Brazil will be fierce and he knows he needs to be at his absolute best.

Massive thanks to Motion Mender for the ongoing support with massages keeping his body in shape through this intense training block. Thanks also to PinK Coco London and PartMax for the ongoing support. This journey takes a village and we are grateful for everyone behind us.

If you want to support Jakobs journey to the World Championships, please consider visiting his GoFundMe at gofund.me/jakobkarate. Every donation helps with flights, accommodation and competition fees. This is a real family funding a real dream.

Follow Jakobs journey on TikTok @jakob.de.brum and subscribe to our YouTube channel @jdbsports for more training content. Drop a comment and let us know what you want to see next.

For a full guide, see Youth Karate Strength Training Hurricane Warm Up Drill.