What is a decathlon?

Can you help me understand what a decathlon actually is? I’ve heard a lot about it from my friends, but I, myself really don’t know what it is. It would be a big help if you can give me an insight about it. Thanks in advance.

What are some causes of cramps?

I have a leg problem since July of 2017 which keeps coming back every now and then, I thought it would go away resting for weeks but it doesn’t. Haven’t tried consulting an ortho because I thought it’s just a simple leg cramps, can anyone tell me what causes cramps and how to avoid it?

UltraBoost or UltraBoost Uncaged for running?

I´m a fairly heavy runner (95 kg, 1,85, body fat 22.5%) and looking to start training, have never run in my life but played basketball competitively some years back. Looking at the Adidas UltraBoost and the UltraBoost Uncaged. I´ll try them on tomorrow, just need to know how serious and generalized is the claim that the uncaged hurt the ankle and if it´s good enough for running training or there´s a significant improvement when choosing the regular UltraBoost´s.

How to do burpees?

My name is Gerry, 49 years old, working in a real estate company, I used to work out in a gym 5 days a week, but when my trainer asked me to do sets of burpees, I think that he gave me the work program and didn’t consider my age. I’m here to ask you guys if is it still advisable for my age and how to do burpees properly? Need your opinion on this. Thanks