Its best to use the formula that takes in consideration your resting heart rate as well as age vs the standard 220 - Age formula but I'd say what you are doing is pretty good for a workout.
Colloid is a heterogeneous mixture in which particle size is intermediate of true solution and suspension.Smoke from a fire is example of colloidal system in which tiny particles of solid float in air.olloid is a heterogeneous mixture in which particle size is intermediate of true solution and suspension.
Homogeneous mixtures with a dispersed phase in this size range may be called colloidal aerosols, colloidal emulsions, colloidal foams, colloidal dispersions, or hydrosols. The dispersed-phase particles or droplets are affected largely by the surface chemistry present in the colloid. Some colloids are translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid. Other colloids may be opaque or have a slight color.