New training programme

Gardeners are prone to bad backs and bad knees. Since I have both I should really start doing something about them.
Luckily I have a friend who is a personal trainer so I have had tonne of advice off him.
Core strength training and leg stretching definitely improve the old creaky back area.
I've got some core strength exercises to start working through, these are:

• The Plank or Prone Bridge
  
• Lateral Bridge
• Supine Bridge
• Pelvic Thrusts
• Russian Twists
• Lat Pull Downs
• Squats
• Crunches
• Lunges
• Back Extensions
• Chin Ups