Lumbago

I've had a piercing pain in the left lower back for a several days.
What has caused it?
I've made a habit to do some exercise two or three times a week , however , it couldn't have been pushed too far.Then any other reason ?
The skiing season is about to satart , so I have to ge well soon.
I just had my two pair of skies repaired and today I got them at the sports shop nearby.

Preparation fo the coming winter

Since unseasonable heavy snow in October, it's been relatively warm these days.
However the winter is just around the corner, I have to get ready for the severe season.
I've changed tires for snow in the morning and took a morning nap for one hour.
On waking up , I started to practice routine exercise for three hours.
As it was Indian summer out there I could run just in a short -sleeved undershirt.
my routine---5 km jogging , stretching and circuit training .

Death of my skiing master

I've once belonged to an alpine junior racing team when I was twenties.
He was both the founder and coach of the team.
He seeme to love teaching the kids as well as playing.
He started to play ski when he was 35,and then have won many championships.
Especially he has kept championship in Japan Msters ski race for 13 years in a row.
It' s a great record I hope.
Many people attended his wake on Friday's night.