Workout Plans › 4-Week (4 Sessions per Week), Upper-Lower, Endurance Image 1 of 1 4-Week (4 Sessions per Week), Upper-Lower, Endurance £16.00 A 4-week endurance plan featuring 4x upper-lower workout sessions per week.(Ref: 04-4C-END) Add To Cart Added! A 4-week endurance plan featuring 4x upper-lower workout sessions per week.(Ref: 04-4C-END)