The phrase 'a voluntary activity' is correct and usable in written English.
You can use it when you are referring to an activity that someone does by choice, without being forced to do it. For example, "The volunteer program at the local hospital provides a range of voluntary activities for people to get involved in and give back to their community."
If we involve in sexual activity after alcohol consumption it is a voluntary activity that we perform actively with involvement…There will be delay in ejaculation when we have sex after alcohol consumption.
Our penis will shrink. Male migrant worker Calicut If we involve in sexual activity after alcohol consumption it is a voluntary activity that we perform actively with involvement…There will be delay in ejaculation when we have sex after alcohol consumption.
Trade therefore is a voluntary activity among consenting parties.
No one has ever been compelled to attend prayers — they are a voluntary activity".
"We can't force people to work overtime, because it's a voluntary activity..
Nolan concludes: Regardless of how realistic or fantastical the situation is, online sex is a voluntary activity.
The aims of the current study were to examine how performing a voluntary action modulates neural activity during perception, where in the brain these modulations take place, and what is the role of performing hand identity (left versus right) in such modulation.
Yet it became the great engine of American religiosity, creating a new sort of country where membership of a church was a purely voluntary activity.Look back at the first great success in this free market, Methodism, and it is not difficult to spot where Yoido's growth formula came from.
Sustainability reporting is a mostly voluntary activity that has gained great adherence in the corporate world.
Without the second-hand smoke issue, the anti-smoking crowd would never have been able to convince anyone that smoking was anything but a purely voluntary activity.
In his book Man, Play and Games, Roger Caillois wrote "there is also no doubt that play must be defined as a free and voluntary activity, a source of joy and amusement.
