I can no longer reach those high speeds

Reason: You have been overtraining with the sphere (see also "My Powerball won't spin past 5000rpm above")

Solution: Reduce your training sessions either in volume or duration.

Detailed Explanation: Like any form of exercise, it is easily possible to overtrain with your Powerball.

In truth, there is no specific [training] schedule timeframe that we can recommend each day; our simple advise is to never exceed your own abilities on the splendid sphere.

Each user is unique and will be able to tolerate a longer or shorter training schedule than another. (Speed ability is not linked to physical arm size either though it does help to have substantial arms and wrists when seeking those elusive high scores.)

For example, we ourselves have regularly spent up to 9 hours each day, from Thursday to Sunday, spinning furiously while demonstrating Powerball at a show without suffering any discomfort or harmful side effect.

Indeed, from my own personal experience, I have always managed my very best scoring during such events on the very last day as my arms, traditionally used to a mere 10-15 minutes work on the sphere each day while sitting in front of my computer, firm up nicely as a result of the hammering received over the 9hr days.

On the contrary, several colleagues will be ready to have their arms amputated on these final days and will be posting miserable scores, sometimes up to 25% less than their personal bests!

If you are finding yourself in a position whereby you have achieved a 13k score and now, a couple of days later, you are struggling to hit 11k or 12k then it is our advice that you take a break from the all out score efforts and settle into some endurance work where you run the ball for sessions of up to 10 minutes at perhaps 60% - 70% of your personal best... after one week of this training, we recommend a 1-2 day break from the ball entirely followed by a �hot� session where you really go all out for a good score! Following this simple routine will yield new personal bests for 95% of players.